Answer:
A boy brought a pair home as pets.
Explanation:
As small organisms will not have any major adaptations for moving quickly or flying to whole another country, hence it is not possible for the snail to travel from Africa to Florida with small animals. Getting stuck on the airplane wing is also not correct as they would have been wiped out by the wind pressure or might have not be able to survive. Hence, the most logical explanation for the snail to get transported to Florida is by a boy who might have brought them as a pet.
why is there infinite variety in the living world ?
Infinite variety in the living world, known as biological diversity, is a result of evolutionary processes and mutations that allow organisms to adapt to different environments. These adaptations lead to a range of species that can survive under various conditions, thus contributing to the vast diversity of life on Earth.
The question 'why is there infinite variety in the living world?' touches on the concept of biological diversity, which refers to the multitude of different species of plants, animals, and microorganisms that exist on Earth, as well as the complexity of ecosystems they form. There are over a million known species, and scientists estimate that this is just a fraction of the total number that exists. The vast variety of life is attributed to evolution and the concept of mutation, where random changes in genetic material create new traits that can be advantageous for survival. Organisms that are better suited to their environment tend to have greater reproductive success, as per the principles of natural selection. Over time, as environments change, the process of natural selection favors the survival of organisms that have beneficial mutations, leading to a rich diversity of species adapted to a wide range of environments.
Environmental changes can be both gradual and sudden, such as natural disasters, which also play a role in shaping the diversity of life. Species diversity ensures that at least some life forms can survive and thrive amidst various environmental shifts. The biodiversity we observe today is a snapshot of a dynamic, ongoing process of species adaptation and evolution.
A single cell includes many specialized parts and organelles to carry out various processes. For example, the endoplasmic reticulum is a complicated network of folded membranes with a large amount of surface area on which chemical reactions are carried out.
Which of the following statements best explains how the specialized parts of cells came to have their current form?
Answer:
Ancient single-celled organisms competed for food, energy and raw materials. Natural selection favored cells that could compete effectively.
Explanation:
The theory of natural selection explains how organisms with the best characteristics are able to survive in an environment and pass on their characteristics to their organisms. Through the phenomenon of natural selection, evolution occurs and species tend to evolve into new species. The same phenomenon goes for the cells. Ancient prokaryotes competed for food, energy an other materials. Those prokaryotic cells which were better adapted were favoured by natural selection.
Final answer:
The statement selected is Ancient single-celled organisms competed for food, energy, and raw materials. Natural selection favored cells that could compete effectively.
Explanation:
The specialized parts of cells, such as the endoplasmic reticulum, Golgi apparatus, and lysosomes, have evolved to their current form through a process known as endosymbiosis and natural selection.
This complex endomembrane system is essential for the various functions within the cell, including protein synthesis, modification, and transport of lipids and proteins. Infoldings in the plasma membrane of ancestral cells are believed to have given rise to different membrane-bound organelles.
Over time, these organelles have become more specialized as cells adapted to different needs and functions. Cells such as muscle cells and pancreatic cells have varying amounts of mitochondria and ribosomes, respectively, to meet their energy and enzyme production requirements.
Such specialization ensures efficient functioning and survival of the cell in its environment.
what causes changes in protein structure
Protein structure change due to many factors, change in pH and temperature can cause change in the structure of the protein.
Change in structure of the proteinPH- decreasing the pH by adding acid, the structure of protein unfold. too much increase in the pH can denature the protein.Temperature- Too much temperature or heat denature the protein by destroying the non-covalent bond.Some other factors are hydrogen bonding, hydrophobic affect, salt bridges, vander waals force etc.Thus, factors such a temperature, pH, solvation, primary and secondary structures etc.
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Which of these statements describes the worst-case scenario?
A. A species is moved from the endangered list to the threatened list.
B. A species is moved from the threatened list to the endangered list.
C. A species is placed on the endangered species list.
D. A species is moved from the endangered list to the extinct list.
Answer:
the correct one is D :)
A species is moved from the endangered list to the extinct list describes the worst-case scenario. So, the correct option is D.
What is an Endangered species?A species that is threatened with extinction in the not-too-distant future, either globally or within a certain political jurisdiction, is known as an endangered species. Invasive species, habitat degradation, poaching, and other issues may put endangered animals in danger.
An organism that faces extinction is referred to as an endangered species. The two main factors that cause a species to become endangered are habitat loss and genetic diversity loss. An organism that faces extinction is referred to as an endangered species. The two main factors that cause a species to become endangered are habitat loss and genetic diversity loss.
Therefore, the correct option is D.
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What’s the oxidation state of Se in H2SeO3
Answer: (+1) for each H and (-2) for each O, (+4) for Se
Explanation:
Legal medications can have riska or side effects even when they are used
properly.
A. True
B. False
The area where an organism lives its life including the living and nonliving factors
Answer:
habitat
Explanation:
The area where an organism lives its life including the living and nonliving factors is known as the Habitat.
What is Habitat?Habitat may be defined as a type of natural environment for which a particular species is best adapted due to natural selection. It may also be characterized as the area where the basic demands of an organism are fulfilled like food, shelter, space, mating partner, etc.
It is an ecological principle that no organism can have the ability to survive outside of its habitat for a long time. This is because it is a set of environmental conditions or factors which are extremely favorable for an organism in order to survive and reproduce naturally.
Therefore, the habitat is the area an organism lives its life including the living and nonliving factors.
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dog excrement is carried by rain into bodies of water, where it causes algae to grow rapidly and crowd out other organisms in the ecosystem. what is this process called?
answer asap
Answer:
When dog excrement reach the bodies of water transported by rainwater, producing the rapid growth of algae, this process is called eutrophication, and involves the crowd out other organisms in the ecosystem.
Explanation:
The dog's excrement contains nitrogen and phosphorus, which produces the enrichment of the body of water, and allows the development of algae in them.
Eutrophication consists of the process by which a water source acquires nutrients, especially nitrogen and phosphorus, which promote the growth of algae, in addition to the increase of other life forms, altering the existing ecosystem.
This process usually occurs with agricultural runoff, where fertilizer residues reach the water and produce its enrichment. It's also possible to observe eutrophication when excrement or other natural waste, rich in nitrogen and phosphorus, reaches a water source.
Eutrophication is also called hypertrophication.
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Compounds that are usually smaller and contain mainly ionic bonds are: simple compounds, complex compounds, organic compounds and inorganic compounds
Answer:
Compounds that are usually smaller and contain mainly ionic bonds are inorganic compounds
Explanation:
Inorganic compounds are those compounds that don't contain C-H bond and are bonded by ionic bonds. Due to the bonding with ionic bonds, they are rigid, have high melting and boiling points. Inorganic compounds are generally good conductor of electricity and are most abundantly found on earth. Inorganic compounds usually contain some type of metal like alkali, alkaline,etc which is the reason for their reason for the conductivity of electricity.What are the possible blood types of a child that had parents that were both heterozygous for "B" blood.
Answer:
B
Explanation:
what diseases is caused by a protozoan?
Answer: The infectious diseases that are caused by protozoa include Chagas diseases, Human African Tripanosomiasis, and Leishmaniasis, among others. Chagas disease is a tropical parasitic disease caused by the Protist, Trypanosoma cruzi which spreads through insects like “kissing bugs”
Explanation:
Describe the temperature pattern within the atmosphere and be specific. Why do you think these temperature changes happen?
Answer with Explanation:
The "atmosphere" consists of 4 layers. These layers are: troposphere, stratosphere, mesosphere and thermosphere. These layers are arranged from lowest to highest. As one goes up the space, the temperature in these layers changes.
Troposphere - temperature decreases with heightStratosphere - temperature increases with heightMesosphere - temperature decreases with heightThermosphere - temperature increases with heightThese temperature changes happen because of many factors.
For example, in the troposphere, temperature decreases with height because the energy that comes from the sun is being absorbed in the ground. The ground, on the other hand, tries to release the absorbed energy. Thus, the temperature in the lower portion of the troposphere is warmer than in the higher portion. So it decreases with height.
When it comes to the stratosphere, the temperature increases with height because the ozone layer is located in here. This is because the ozone layer absorbs the ultraviolet rays (UV rays).
The mesosphere is similar to the troposphere because it contains concentrations of oxygen and nitrogen. Thus, temperature decreases with height.
The thermosphere is directly being heated by the sun, thus its temperature increases with height.
In a scale model of the Solar System, if the Sun is represented by a ball with a diameter of about 8 inches, about how far away would Neptune be?
A.
700 inches
B.
700 yards
C.
700 miles
D.
700 feet
Answer:
b or c im not sure sorry
Explanation:
Assuming the scale model of the Solar System is 1:10,000,000 (meaning each inch on the model represents 10,000,000 inches in the actual Solar System), we can use the following steps to estimate the distance from the Sun (represented by an 8-inch ball) to Neptune in the model:
What is the distance between Sun and Neptune ?Find the actual diameter of the Sun in miles. According to NASA, the diameter of the Sun is about 864,938 miles.
Divide the actual diameter of the Sun by the scale factor to find the diameter of the Sun in the model.
864,938 miles / 10,000,000 = 0.0864938 inches
The diameter of the Sun in the model is about 0.086 inches (rounded to three decimal places).
Find the actual distance from the Sun to Neptune in miles. According to NASA, the average distance from the Sun to Neptune is about 2.8 billion miles.
Divide the actual distance from the Sun to Neptune by the scale factor to find the distance from the Sun to Neptune in the model.
2.8 billion miles / 10,000,000 = 280 inches
Therefore, in the scale model of the Solar System where the Sun is represented by a ball with a diameter of about 8 inches, Neptune would be about 280 inches away.
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in which stage of the cell cycle is this cell?
mitosis
cytokinesis
interphase
The stage of the cell cycle could be mitosis, cytokinesis, or interphase, depending on the cell's current activities and appearance. Mitosis is where the nucleus divides, cytokinesis is where the cytoplasm splits into two new cells, and interphase is a preparatory phase where the cell grows and DNA replicates.
Explanation:The question seems to be asking at which stage of the cell cycle a particular cell is, but without a visual representation or further details, it's impossible to definitively say. However, let's explain what happens in each stage. Mitosis is the part of the cell cycle in which the nucleus of the cell divides. It's generally preceded by interphase and followed by cytokinesis. Cytokinesis is the stage where the cell's cytoplasm splits, creating two separate cells. Meanwhile, interphase is the phase in which a cell prepares and grows before mitosis, and it also is the stage where DNA replication occurs. Hence, a cell could be in any of these phases based on its activities and appearance.
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The cell is in the stage of mitosis.
The correct option is (a).
- Mitosis is the phase of the cell cycle where the cell divides its nucleus into two identical nuclei.
- During mitosis, the chromosomes condense, align at the metaphase plate, separate into two sets, and move to opposite poles of the cell.
- This stage is crucial for growth, repair, and asexual reproduction in organisms.
- Mitosis is followed by cytokinesis, where the cytoplasm divides, resulting in two daughter cells with identical genetic material.
- Interphase, the longest phase of the cell cycle, precedes mitosis, during which the cell prepares for division by growing, replicating DNA, and performing its normal cellular functions.
Which of the following infectious agents cannot live outside of a human body for extended periods of time?
A.
mycobacteria
B.
salmonella bacteria
C.
trichophyton fungi
D.
human immunodeficiency virus
Answer:
D
Explanation:
Dhdhdh
Ms. Timms explains to her class that stars look different in the sky depending on how close they are to Earth. She takes the class into the hallway. She gives a flashlight to Maurice and an identical flashlight to Jessica. Maurice shines his flashlight about one meter away, close to the class. Jessica walks far down the hallway and shines her flashlight about twenty meters from the class. What did the class notice about the two lights? A) The far light was wider. B) The closer light appeared (or looked) brighter C) The lights were the same size. D) The lights were different shapes.
Answer: The closer light was appeared (or looked) brighter
Explanation:
The students notice that the closer flashlight appeared brighter. This perception is due to a physical law known as the Inverse Square Law, which explains that light intensity decreases with distance.
Explanation:In the classroom scenario presented, the students notice that the closer light appears brighter than the light which is farther away. This is because of a known concept in physics called the Inverse Square Law, which states that the intensity of a light (in this case, or radiation) drops significantly as you move further from the source. So, even though both Maurice and Jessica have identical flashlights, the light from Jessica's flashlight appears less bright due to the increased distance.
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experiment that will look into the effect of wind speed on rate of transpiration
Final answer:
One experiment that can investigate the effect of wind speed on the rate of transpiration is to set up different plants in containers with varying wind speeds. The rate of transpiration can be measured by weighing the plants before and after a certain period of time.
Explanation:
One experiment that can investigate the effect of wind speed on the rate of transpiration is to set up different plants in containers with varying wind speeds. Each container should have a plant with a similar size and number of leaves. The wind speed can be controlled by using fans of different strengths. The rate of transpiration can be measured by weighing the plants before and after a certain period of time. The plants exposed to higher wind speeds are expected to have a higher rate of transpiration compared to those with lower wind speeds due to increased evaporation.
Fill in the blank.
1. Red blood cells are a type of specialized cell that move
and carbon dioxide
throughout the body.
2. A structure made of two or more tissues working together to achieve a common function is a/an
4. A/An
5. In
describes the degree of specialization that a cell is able to undergo.
cell can differentiate into all cell types found within an embryo.
organisms, all cellular activities take place within a single cell.
Respond to the following based on your reading.
6. Choose a specialized cell type mentioned within the reading (blood cell, muscle cell, or
neuron). Do some outside research to understand the tissue this specialized cell is a part of
and what organ and organ system it belongs to.
Answer:
oxygen
organ
Potency
pluripotent
unicellular
Student answers will vary. As an example, a group of neurons together may form nervous tissue. Nervous tissue can be found all over the body, but a large collection of it is located in the brain. The brain is a complex organ composed of nervous tissue. The brain is part of the organ system known as the nervous system.
Explanation:
penn foster
The given blanks can be filled as follows:
1. The Red blood cells or RBCs can be defined as the specialized cells which are responsible for transporting carbon dioxide and oxygen throughout the body.
The component hemoglobin present in the red blood cells is responsible for carrying oxygen and carbon dioxide
2. An organ can be defined as a structure that is composed of two or more tissues similar tissues that work color in order to achieve a common function.
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How would students go about getting into these careers?
Answer:
Career counselling is one of the best methods which can help students to develop a career in their field of interest. While choosing a career, the students should keep in mind that they should chose the option in which they are interested. The students should spend time in exploring different careers in their field of interest and choose accordingly.
explain why a heavy rainfall on a fruit orchard in the spring (when it is flowering) might result in a poor fruit yield in the fall.
describe what happens during the process of crossing over
Answer:
crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatids. The two homologous chromosomes of a pair synapse, or come together. While the chromosomes are synapsed, breaks occur at corresponding points in two of the non-sister chromatids, i.e., in one chromatid of each chromosome. Since the chromosomes are homologous, breaks at corresponding points mean that the segments that are broken off contain corresponding genes , i.e., alleles. The broken sections are then exchanged between the chromosomes to form complete new units, and each new recombined chromosome of the pair can go to a different daughter sex cell. Crossing over results in recombination of genes found on the same chromosome, called linked genes, that would otherwise always be transmitted together. Because the frequency of crossing over between any two linked genes is proportional to the chromosomal distance between them, crossing over frequencies are used to construct genetic, or linkage, maps of genes on chromosomes. Mutations , temperature changes, and radiation all affect crossing over frequency. Under the microscope, a crossover has the appearance of an X and is called a chiasma.
Explanation:
Which best summarizes the process of protein synthesis?
ORNA instructs DNA to make proteins.
DNA unzips, resulting in the formation of two protein molecules.
RNA moves the DNA code to the ribosomes for protein synthesis
O DNA makes proteins in the nucleus.
Answer:
RNA moves the DNA code to the ribosomes for protein synthesis
Explanation:
Translation is the process by which mRNA is decoded and translated to produce a polypeptide sequence, otherwise known as a protein. This method of synthesizing proteins is directed by the mRNA and accomplished with the help of a ribosome, a large complex of ribosomal RNAs (rRNAs) and proteins. In translation, a cell decodes the mRNA genetic message and assembles the brand-new polypeptide chain. tRNA, translates the sequence of codons on the mRNA strand. The main function of tRNA is to transfer a free amino acid from the cytoplasm to a ribosome, where it is attached to the growing polypeptide chain. tRNAs continue to add amino acids to the growing end of the polypeptide chain until they reach a stop codon on the mRNA. The ribosome then releases the completed protein into the cell.
Answer:
RNA moves the DNA code to the ribosomes for protein synthesis
Explanation
What effect did the simulated acid rain have on the marble chip?
Answer:
When acid rain falls on the marble stone, it dissolve calcium when the acid present in the rain water react with the calcium of the marble stone.
Explanation:
Acid rain is formed when gases such as carbondioxode and sulfur dioxide etc that is emitted from vehicles and industries goes to the atmosphere and react with the water present in the form of clouds and formed the water acidic. When this water comes down to the earth, it damage many materials due to acid present in it.
What is the rock cycle
Answer:
The rock cycle is a basic concept in geology that describes transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Each rock type is altered when it is forced out of its equilibrium conditions. For example, an igneous rock such as basalt may break down and dissolve when exposed to the atmosphere, or melt as it is subducted under a continent. Due to the driving forces of the rock cycle, plate tectonics and the water cycle, rocks do not remain in equilibrium and change as they encounter new environments. The rock cycle explains how the three rock types are related to each other, and how processes change from one type to another over time. This cyclical aspect makes rock change a geologic cycle and, on planets containing life, a biogeochemical cycle.
Answer:
basic concept in geology that describes traditions through geologic time among the three main rock types.
Explanation:
it is formed under extreme pressure and temperature deep inside mountain chains.
Which of these best describes a transgenic organism?
A)DNA from one or organism is put into another
B) delete part of the original DNA
C) humans choose which organisms should mate for favorable characteristics
A transgenic organism is one which has had DNA from one organism incorporated into another, enabling a new trait or function. This does not remove any part of the original DNA, nor does it involve selective breeding. The correct option is A.
Explanation:A transgenic organism is best described by option A. In this case, DNA from one organism is incorporated into another, creating a new genetically modified organism. The organism receiving the DNA now has a new trait or function that it didn't originally have, depending on the DNA that was introduced. This process is extensively used in modern biotechnology, for instance in introducing herbicide resistance in plants, or producing insulin in bacteria. It's essential to note that this process doesn't remove or delete any part of the original DNA, it adds to it. Furthermore, it's also distinct from option C, which describes selective breeding, not transgenic modification.
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A transgenic organism is best described by option A: DNA from one or more organisms is put into another. This involves the use of biotechnology to introduce foreign DNA into an organism. This process is widely used in research, agriculture, and medicine.
This is because transgenic organisms are those that contain foreign DNA which has been introduced using biotechnology. This foreign DNA can come from another species or can be recombinant DNA that has been manipulated in the lab and then reintroduced into the organism. The process of creating transgenic organisms involves genetic engineering and is widely used in research, agriculture, and medicine. For example, genetically modified crops such as corn and soybeans are transgenic organisms that contain specific genes introduced to enhance resistance to pests or herbicides.Which of the following organs is NOT a part of the immune system?
Appendix
Tonsils
Peyer's patch
Thymus
Answer:
Peyer's patch
Explanation:
Polaris, also known as the North Star, is about 46 times larger than the Sun. Explain why the Sun appears brighter than Polaris from Earth. A) Polaris is much farther from Earth than the Sun. B) The Sun's temperature is much greater than Polaris's. C) Polaris's light is partially hidden behind other planets. D) The Sun has a much grea
A) Polaris is much farther from Earth than the Sun -is the reason why Polaris although about 46 times larger than the Sun, the Sun appears brighter than Polaris from Earth.
Explanation:
Astronomers define the brightness of a star based on its apparent magnitude and absolute magnitude. The apparent magnitude tells about how bright does a star looks from the Earth. The absolute magnitude of star is its brightness or magnitude at a standard distance of 10 parsecs or 32.6 light-years.
Accordingly,
The apparent magnitude of Sun is 26.74; while that of Polaris is 2.02
The absolute magnitude of Sun is 4.63; while that of Polaris is 3.6
The Sun is at a distance of 0.000015649 light years from the Earth; while the Polaris is 434 light years from the Earth. A star appears brighter from the Earth due to the closeness of the star to the Earth.
All these factors make the Sun appear brighter than the Polaris .
EXPERIMENT: PHOTOSYNTHESIS REACTIONS
There are two life sustaining reactions photosynthesis which converts energy from the sun into a usable form of energy for living things and cellular respiration which converts the energy that is stored in the product of photosynthesis into a usable form of energy for the cell. The equation for photosynthesis is 6H2O + 6CO2 -➔ C6H12O6 + 6O2. Oxygen gas is a waste product for the plant and is released into the atmosphere. In this lab you will look at several things that can affect the rate of the reaction by looking at the amount of oxygen gas produced.
OBJECTIVES
Determine factors that affect the rate of the photosynthesis reaction.
Online lab
This animation will demonstrate one factor that affects the rate of the photosynthesis reaction. You will be observing a water plant, elodea undergo photosynthesis. The solution that the elodea is in is a solution of sodium bicarbonate (baking soda) and water. The sodium bicarbonate provides the carbon dioxide needed for the photosynthesis reaction, this factor will remain constant in this animation. The factor that will be tested is the light intensity. The light intensity will be varied by changing the wattage of the light bulbs. For each trial, you will count the bubbles released by the elodea undergoing photosynthesis. Be sure to record your observations and data to use to complete the assignment.
This experiment will show the effect of light intensity on the rate of photosynthesis.
For each trial, you will be counting the number of bubbles the elodea plant releases.
Remember to record you data and any observations on your data sheet.
In trial one, the light is from a sixty watt bulb and is 20 cm from the beaker containing the elodea set up.
Once the time starts, count the number of bubbles the elodea releases for 3 minutes.
Start the timer and count the number of bubbles released in 3 minutes. Record your data at the end of the trial.
For trial 2, the light will still be twenty centimeters from the beaker, but the bulb has been replaced with a one hundred watt bulb.
Start the timer and count the number of bubbles released for 3 minutes. Remember to record your data at the end of the trial.
Again, for trial three, the light will be twenty centimeters from the beaker. This time the light bulb is a one hundred fifty watt bulb.
Start the timer one more time and count the bubbles for 3 minutes. Record your data.
Now use the data you collected to complete the assignment.
In complete sentences, answer these questions in the essay box below. Be sure to use the data and observations you collected if needed.
1) What are the bubbles that the elodea released made of?
2) What conclusions can you draw about the relationship between light intensity and the rate of photosynthesis? Be sure to refer to your data and justify your response.
3) What is another way that the intensity of the light could be tested? Describe your procedure.
4) Look at the photosynthesis reaction 6H2O + 6CO2 -➔ C6H12O6 + 6O2. What do you think might be other factors that can affect the rate of this reaction?
5) Make a hypothesis about your answer to question 4.
6) Design an experiment to test your hypothesis in question 5.
What grade is this,i did not get a chance to see
The bubbles released by the elodea plant during photosynthesis are oxygen. With increase in light intensity, the rate of photosynthesis increases. Other factors like CO2 concentration, water availability, and temperature could impact the rate of photosynthesis and experiments can be designed to test these.
Explanation:1) The bubbles that the elodea released are made of oxygen. This is a byproduct of photosynthesis.
2) Based on the data collected, we can conclude that as light intensity increases, so does the rate of photosynthesis. This is represented by the increasing number of bubbles (oxygen) being produced with each increase in light intensity.
3) Another way to test the light intensity could be by changing the distance of the light from the plant. The procedure would involve keeping the light of same wattage and varying the distance from the plant for each trial, and counting the number of bubbles released.
4) Other potential factors that might affect the rate of photosynthesis include carbon dioxide concentration, water availability, and temperature.
5) Hypothesis: If the carbon dioxide concentration were increased, then the rate of photosynthesis would increase.
6) To test this hypothesis, an experiment could be designed where the Elodea plant is exposed to environments with different carbon dioxide concentrations while keeping all other factors constant. The number of bubbles released would then be counted over the time of exposure to each concentration, to compare the rate of photosynthesis.
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in order for natural selection to occur Charles Darwin stated we must begin with a population for organisms that has genetic
Answer:
D. variation.
Explanation:
In order for natural selection to occur, Charles Darwin stated we must begin with a population that has genetic variation. The genetic variation allows some members of the population to have traits, like a certain color, that helps them to survive. If an organism survives, it reproduces, and then passes those traits on to the offspring.
For natural selection to occur as defined by Charles Darwin, there needs to be genetic variation within a population of organisms. When a certain trait provides a survival advantage, it becomes more common over generations through the process of natural selection.
Explanation:In order for natural selection to occur, Charles Darwin indeed stated that we must begin with a population of organisms that possesses diverse genetic variation. This genetic variability within a population is vital for natural selection, as it represents different adaptations of the organisms to their environment. When a certain trait gives an organism an advantage in survival and reproduction in a particular environment, this trait would increase its frequency in the population over generations through the process of natural selection. For instance, if a species of birds exists where some have short beaks and others long, and if long beaks turn out to be more advantageous in obtaining food, then the long-beaked birds will have a higher survival rate and thus more offspring. Over generations, the prevalence of long beak will increase in the population thus illustrating natural selection.
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Prompt
Identify and discuss factors that influence ecosystem productivity
Read More >>
o 9 X
2
BIUS * x2
-
0
1
Answer:
Energy in an ecosystem is mainly made by the producers of an ecosystem. The net primary productivity in an ecosystem depends on many factors. Some of them are:
Amount of sunlight: The amount of sunlight that the plants and trees might be has basic influence on the primary productivity. Plants and trees receiving enough sun light will be able to make more food for organisms living in that area as compared to the producers which do not receive enough sun light.Soil texture: The soil texture and the availability of nutrients heavily influence the primary productivity of an ecosystem. An area having a soil texture with not enough nutrients will not be able to grow more plants. As a result, the productivity would decrease.
Final answer:
Ecosystem productivity is mainly influenced by abiotic factors such as temperature and moisture, with net primary productivity being a key measure. Warm, wet climates lead to higher productivity, while extreme conditions result in lower levels. These factors dictate the type and abundance of plant and animal life in various biomes.
Explanation:
Factors that influence ecosystem productivity are primarily determined by abiotic factors like temperature, moisture, and availability of resources. In terrestrial environments, net primary productivity is a critical measure, representing the rate at which plants produce organic matter through photosynthesis minus what is used during cellular respiration. This productivity is largely dependent upon conditions favoring plant growth, such as warm and wet climates that facilitate efficient photosynthesis, enzymatic activity, and minimal water loss through transpiration.
Biomes such as tropical rainforests exhibit high net primary productivity due to optimal growth conditions. In contrast, environments such as deserts or tundra biomes, with extreme temperatures and limited water, display much lower levels of primary productivity. This, in turn, affects the type and abundance of animal life they can support. Consequently, changes in abiotic factors like climate can have significant impacts on the productivity of ecosystems worldwide.