Answer:
human activity
Explanation:
The wetlands and the coral reefs have gradually been destroyed by the humans and their activity. The wetlands were the first to be under the human influence and getting destroyed, while the coral reefs have come to have similar destiny in the last century. The reasons for the destruction are different. The wetlands have in general been destroyed on purpose, be it because they were epicenter of diseases, for making more land for agriculture, or making more land for settlements. The coral reefs have not been destroyed on purpose, but the human activity has resulted in lot of pollution of the ocean waters, as well as changes in the climate, and the fragile corals can not adapt quickly enough to these changes, so they die out quickly.
What is the main "hitch," or problem, in getting fusion to occur?
Answer: working with intense pressure and heat
Explanation: you would you have to work with intense pressure and heat in order to fuse two hydrogen nuclei together to create helium isotopes.
Answer:
The main problem is achieving ignition to start the reactions. Fusion reactions can occur only at extremely high temperatures.
Explanation:
Based on the data table which two species are most closely related?
Answer:
C.) B and C
Explanation:
Which sentence best describes an ecosystem?
Answer: D
Explanation:
answer is : an ecosystem is all of the organisms living in a given area
Which of these is an exothermic reaction?
A. photosynthesis
B. cooking an egg
C. cellular respiration
D. rubbing your hands together
I think it might be C because when you are rubbing your hands energy is not released it’s absorbed, cooking an egg the heat from the pan is absorbed by the egg, photosynthesis the plant is taking in energy, and in cellular respiration you release energy
chloroplast is responsible for the reactions of photosynthesis true or false
Answer:
The answer is TRUE
Explanation:
Answer: true, in cellular respiration the mitochondria is what helps it.
Which Best describes the purpose of a bar graph?
The purpose of a bar graph is to show the relationships between different data by showing a quantity or amount for each category.
A bar graph (also known as a bar chart or bar diagram) is a visual tool that uses bars to compare data among categories. A bar graph may run horizontally or vertically. ... The graph represents categories on one axis and a discrete value in the other. The goal is to show the relationship between the two axes.
What must the grasses be able to do to survive?
A The grasses must be able to outcompete cacti and yucca plants for shelter from
storms.
B The grasses must be able to outcompete cacti and yucca plants for minerals in
mountain rocks.
C The grasses must be able to outcompete cacti and yucca plants for shade.
D The grasses must be able to outcompete cacti and yucca plants for water.
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D. Must be able to outcompete cacti and yucca plants for water
Green power comes from
A. Wind
B. Sun
C. Water
D. All of the above
Answer:D. all of the above
Explanation: because green power just means power harnessed from nature
Answer:
D. All of the above
Explanation:
Green power is from reusable sources. The Sun, wind and water are all reusable.
What is the placenta, and what is its role in fetal circulation?
The prenatal circulation of blood is different than the postnatal circulation, mainly because the lungs are not in use. The fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord. Blood from the placenta is carried to the fetus by the umbilical vein.
62. Compare point-source pollution and non-point pollution.
Answer and Explanation: The difference between point and nonpoint source pollution is that point source pollution has a single, identifiable source while nonpoint source pollution is a collection of pollutants from many different sources, not all of which are readily identifiable.
Answer:
Point source pollution refers to the pollution that occurs from a single identifiable source while nonpoint source pollution refers to the pollution that occurs via many diffuse sources
Explanation:
Which statements describe primary consumers? Check all that apply.
A food chain is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition. A food chain starts with the primary energy source, usually the sun or boiling-hot deep sea vents. The next link in the chain is an organism that make its own food from the primary energy source -- an example is photosynthetic plants that make their own food from sunlight (using a process called photosynthesis) and chemosynthetic bacteria that make their food energy from chemicals in hydrothermal vents. These are called autotrophs or primary producers.
Next come organisms that eat the autotrophs; these organisms are called herbivores or primary consumers -- an example is a rabbit that eats grass
A primary consumer is an organism that feeds on primary producers. Organisms of this type make up the second trophic level and are consumed or predated by secondary consumers, tertiary consumers or apex predators.
how does bacterial resistance illustrate evolution in action in modern times.
The bacterial resistance is a perfect example of how the evolution works, though it is much quicker between the bacteria than it is at the bigger and more complicated life forms. Since the modern medicine has started to be used, lot of medications have been used to kill the bacteria in order to prevent or cure diseases among the people. It has been noticed though that the bacteria needs very short period to adjust to the medications so that they are harmless to it, thus developing resistance. This is a nice example of how the bacteria is evolving in order to be able to survive and thrive in a new environment where there's something that destroys it, thus it is developing advantageous traits to be able to survive.
What structures in the body transport blood through the cardiovascular system?
artery
vein
trachea
lungs
The arteries carry blood away from the heart; the veins carry it back to the heart.
B.veins
Answer:it’s artery , vein
Explanation:on edge 2020
PLEASE HELP ME,
A feedback mechanism that serves to decrease the stimulus and bring a system back to
homeostasis is called a
A. negative feedback mechanism
or
B. positive feedback mechanism
Answer:
A. negative feedback mechanism
Explanation:
A negative feedback implies stimulation towards less change and restoration of the normal state.
A mechanism that serves to decrease the stimulus and bring a system back to homeostasis therefore shall be referred to as a negative feedback mechanism.
This is because homeostasis is the normal state, mechanisms bringing further change to homeostasis can be referred to as positive feedback mechanism and vise versa.
A feedback mechanism that decreases the stimulus and brings a system back to homeostasis is known as a negative feedback mechanism.
Explanation:A feedback mechanism that serves to decrease the stimulus and bring a system back to homeostasis is called a negative feedback mechanism. This process helps to maintain stability in our body by reversing any deviations from the normal levels. Negative feedback does this by triggering responses that counteract changes, bringing the variable back to a set point. For instance, the maintenance of blood glucose levels is a classic example of a negative feedback mechanism. After eating, blood glucose levels rise, which are detected by the pancreas that releases insulin, thereby lowering the glucose levels back to normal.
Conversely, negative feedback also works if glucose levels are too low; the pancreas releases glucagon to increase the glucose levels. The primary function of negative feedback loops is to prevent physiological variables from going beyond the normal range, essentially turning systems 'off' or 'on' to achieve stability. Hence, negative feedback mechanisms are the predominant system used to sustain homeostasis.
Which is a difference between a compound light microscope and a scanning electron microscope?
A.The scanning electron microscope can view the internal part of a cell, while the compound light microscope views the surface of a cell.
B.The scanning electron microscope specimens can be stained for contrast, while the compound light microscope specimen appears black and white.
C.The scanning electron microscope is used for dissections, while the compound light microscope is not.
D.The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.
I need the answer right away please.
Answer:
The answer is D.The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.
Explanation:
Electron microscopes use an electron beam instead of a light beam to form an image, so they can only offer black and white images; while the compound microscope is based on optical lenses, which is also known as a light microscope; It has a lens system that focuses the light from the source towards the small point of the specimen.
The difference between a compound light microscope and a scanning electron microscope is: D. The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.
A microscope can be defined as an optical device that is typically used to make an enlarged (magnified) image of a minute (small) object in order to reveal all the littlest information about the object that cannot be seen by the natural human eye.
Generally, there are different types of microscopes and these include;
Inverted microscope.Polarizing microscope.Compound light microscope.Scanning electron microscope.A compound light microscope refers to an upright microscope that has more than one lens and a visible light source to enlarge an image of a small object.
On the other hand, a scanning electron microscope is a type of microscope that is designed to have a focused high-energy electron beam and a layer of gold to scan the surface of a specimen.
In conclusion, difference between a compound light microscope and a scanning electron microscope is that the former uses light and multiple lenses while the latter uses an electron beam and a layer of gold to view the surface of a specimen.
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Can someone please describe how food is rearranged through chemical reactions forming new molecules that release energy as this matter moves through an organism.
Answer: I think it's photosynthesis
Explanation:
I know this is late, but this is actually an example of Cellular Respiration, the other person is wrong. While, the two are close, they are very different.
All of the population in a particular area make up a?
I would guess a community.
The answer would be: A community
African penguins, which inhabit the coasts of southern Africa, were classified as an endangered species in 2010. Two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. Overfishing depletes the food supply of African penguins.
The best method to reduce the threat of overfishing would be to____
1. Construct a corridor to connect penguins and fish
2. Limit the harvest of particualr fish species
3. perform a population survey on several fish species
The risk of oil spills could be reduced by increasing the use of
1. Natural resoureces
2. Renewable energy sources
3. Nonrenewable energy sources
, which should help______ oil consumption
1. Increase
2. Decrease
. If an oil spill does occur, __________ could be used to help remove the oil so the ecosystem may more quickly recover.
1. Bioremediation
2.reforesation
3. recyclng
Answer:
The correct answer to the first question is 2. Limit the harvest of particular fish species
-By limiting the harvest of the fish that penguins feed on will increase the biomass of that fish and the increased biomass of that particular fish can support the higher population of penguins.
The correct answer to the second question is -2. Renewable energy sources.
-Use of renewable source like solar energy reduce the pressure on the use of fossil fuels therefore it also decrease the risk of oil spills.
The correct answer to the third question is - 2. Decrease.
The use of a renewable source of energy decrease the oil consumption because consumption of renewable source of energy can be used as an alternative to oil consumption.
The correct answer to question four is- 1. Bioremediation
Bioremediation is the process in which the pollution is cleaned by using live organisms. Bioremediation by microbes is used to remove oil spills in oceans.
The best method to reduce the threat of overfishing would be to2)Limit the harvest of particualr fish species. The risk of oil spills could be reduced by increasing the use of 2) Renewable energy sources, which should help 2) Decrease oil consumption. If an oil spill does occur, 1)Bioremediation could be used to help remove the oil so the ecosystem may more quickly recover.
African penguins, which inhabit the coasts of southern Africa, face significant threats from oil spills and overfishing. These issues endanger their food supply and survival.
The best method to reduce the threat of overfishing would be to:To further support the conservation efforts, BirdLife South Africa and CapeNature are introducing rehabilitated African penguins to new sites to establish colonies buffered from negative effects like climate change and fluctuating fish populations.
What happens to the total population when the birth rate is at 40 and the death rate is at 15?
A. The population is moderately decreasing.
B. The population is moderately increasing.
C. The population is decreasing significantly.
D. The population is increasing significantly.
Final answer:
OPTION D.
When the birth rate is 40 and the death rate is 15, the population is increasing significantly as the number of births greatly exceeds the number of deaths.
Explanation:
When the birth rate is at 40 per 1,000 people and the death rate is at 15 per 1,000 people, the population is increasing significantly. This is because the number of births far exceeds the number of deaths, leading to a net increase in the population. According to the demographic transition model (DTM), this situation may be characteristic of a country in the second stage, where death rates have fallen but birth rates remain high, resulting in a faster population growth.
Therefore, the correct answer to the student's question is: D. The population is increasing significantly.
HELP!!!! Which of the following correctly relates the porosity, permeability and production of a well in an aquifer?
a. Increasing porosity and decreasing permeability lead to increased production in an aquifer.
b. Decreasing porosity and increasing permeability lead to increased production in an aquifer.
c. Decreasing porosity and decreasing permeability lead to increased production in an aquifer.
d. Increasing porosity and increasing permeability lead to increased production in an aquifer.
D-Increasing porosity and increasing permeability lead to increased production in an aquifer
Answer:
d. Increasing porosity and increasing permeability lead to increased production in an aquifer.
Explanation:
Underground aquifers are permeable geological formations that allow water to accumulate inside the soil. Depending on how water circulates within the soil, there are three primary types of aquifers: porous, karstic and fissural.
In addition to supplying sufficient water to keep surface watercourses stable (production function), aquifers also help prevent their overflow by absorbing excess heavy rainwater (regularization function).
Sickle-cell anemia is an example of codominance.What implications does this have for people with one or two copies of the sickle-cell gene?
a) people with two copies of the mutated gene have healthy red blood cells.people with one copy of the mutated gene dont have the disease but are carries of the disease.
b) people with two copies of the mutated gene have sicke cell anemia. people with one copy of the mutated gene have healthy red blood cells.
c) people with two copies of the mutated gene have sickle cell anemia. people with one copy of the mutated gene have both healthy and misshapen red blood cells and are carriers of the disease
d) people with two copies of the mutated gene are carriers of the disease. people with one copy of the mutated gene dont have the disease
please help!
Answer:
C
Explanation:
Codominant alleles mean that both alleles are expressed in the trait of the organism because no one alleles mask the effects of the other. Therefore an individual heterozygous for sickle cell will have both healthy and sickle cells in his blood. This is similar to plants with codominant alleles for petal color. If red and white color alleles are codominant, then the petals will have red and white patterns on the petals.
people with two copies of the mutated gene have sickle cell anemia. people with one copy of the mutated gene have both healthy and misshapen red blood cells and are carriers of the disease.
Optio nC is correct.
How do we explain?Sickle cell anemia is a genetic disorder that is caused by a mutation in the hemoglobin gene. Hemoglobin is a protein that carries oxygen in the blood. The mutation in the sickle cell gene causes the hemoglobin molecules to form into long, rod-like shapes. These rod-like shapes can clog up the blood vessels, which can lead to a variety of health problems, including anemia, pain, and organ damage.
People with two copies of the sickle cell gene have sickle cell anemia. They have all of their red blood cells shaped like rods, which can cause severe health problems.
Option C is correc
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Which of the following is a correctly balanced equation?
B. is the answer because the number of moles of the reactants is equal to the number of moles of the products
Answer : The correct balanced equation is,
[tex]2HgO\rightarrow 2Hg+O_2[/tex]
Explanation :
Balanced chemical equation : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.
The balanced chemical reaction is,
[tex]2HgO\rightarrow 2Hg+O_2[/tex]
This chemical reaction is balanced reaction because in this reaction, the number of atoms are balanced on both the sides.
While the other equations are not balanced because the number of atoms are not balanced on both the sides.
Hence, the correct balanced equation is,
[tex]2HgO\rightarrow 2Hg+O_2[/tex]
What is the function of the mitochondria?
A.
to secure the nucleus at the center of a cell
B.
to provide energy for the cell
C.
to provide immune defense for the cell
D.
to move materials in and out of the cell
Answer:
a
Explanation:
Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
Hi!
The succsesful gene, like a camouflage gene, would increase in the species.
Hope this helps!
Answer:
the frequency of the genes in the population
Explanation:
took the tst
Name two ways the bamboo uses the macromolecules it builds
Answer:
photosynthesis and lipids
Explanation:
Answer:
The correct answer is - structural support and storage for energy.
Explanation:
The bamboo is like most of the other plants produce carbohydrates by the process of photosynthesis. Plants convert glucose by polymerization into starch and polysaccharide for storage as an energy source and cellulose for cell wall structure and support.
Starch and polysaccharides provide energy by digesting the covalent bonds through the cellular respiration process. cellulose form the cell wall of the plant cells and gives it strength and support.
Thus, the correct answer is - structural support and storage for energy.
What do isotherms show? Points of equal humidity Points of equal wind speed Points of equal air pressure Points of equal temperature
Answer:
points of equal temperature
Explanation:
The isotherms are closed circular lines that connect dots where the temperature has same value. These lines are very easy to read and they are very useful when it comes to reading a map that has them on, as they will provide us with the information about the temperature. The isotherms are often used in the weather programs and meteorological prognosis, so we pretty much see them every day, but unfortunately the majority of the people do not know what they are and what are they representing.
Simple Answer:
D-- points of equal temperature
What happens if an enzyme is denatured? How does that impact the reaction rate?
Answer:
An enzyme is a biological protein molecule made up of thousands of amino acids. ... Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function.extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. ... Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.
Seasons are caused by ____. (1 point)
a).Earth’s rotation
b.) precession
c.)Earth’s tilted axis
d.)Earth’s distance from the sun
Answer:
Earth's tilted axis
Explanation:
The axial tilt of the Earth causes either the northern or southern hemisphere to be closer to the sun, causing seasons
a).Earth’s rotation
This causes the day night cycle, not seasons.
b.) precession
Precession is the movement of the earth's axis in its orientation with its orbit, for example the orbit changing from lets say 15 to 20 degrees.
d.)Earth’s distance from the sun-
If this were true, all the earth would have the same seasons, but they do not.
Seasons are primarily caused by Earth's tilted axis. This tilt, combined with Earth's orbit around the Sun, results in different parts of Earth receiving different amounts of sunlight at different times of the year, creating the seasons.
Explanation:The seasons are primarily caused by Earth’s tilted axis, which is angled at about 23.5 degrees relative to its orbital plane. As the Earth orbits the Sun, this tilt causes different parts of the Earth to receive varying amounts of sunlight at different times of the year. In the summer months, the hemisphere tilted towards the Sun experiences longer, sunnier days, (i.e., summer), while the hemisphere tilted away experiences winter. Conversely, during winter, the hemisphere tilted away from the Sun experiences shorter, darker days. Earth’s rotation and precession do affect the Earth’s climate but are not the primary causes of the changing seasons. Similarly, Earth’s distance from the Sun varies slightly due to its elliptical orbit but doesn’t significantly affect the seasons.
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What controls traits and inheritance
Answer:
A persons' parents genes (and maybe Natural Selection)
I think the answer for this one might be the nucleic acids
What is the function of the Golgi apparatus?
Answer:
The job of the Golgi apparatus is to process macro molecule. For example proteins an lipids.
Hope this helped!
Brainliest answer? :)
Answer:
Image result for What is the function of the Golgi apparatus?socratic.org
The Golgi apparatus is an organelle present in most eukaryotic cells. It is made up of membrane-bound sacs, and is also called a Golgi body, Golgi complex, or dictyosome. The job of the Golgi apparatus is to process and bundle macromolecules like proteins and lipids as they are synthesized within the cell.
Explanation: