The density of a population of living organisms is usually measured in individuals on one square km. In here we have 50 earthworms on an area of 5 square meters, thus we have 10 earthworms on every square meter. In order to get to the result we need to see first how many square meters there are in one square km. One square km has one thousand meters of length and one thousand meters of width so:
1,000 x 1,000 = 1,000,000 km²
Since we established that we have 10 earthworms on every one square meter, we just need to multiply the number of square meters with the amount of earthworms on every square meter:
1,000,000 x 10 = 10,000,000
So we have a density of 10 million earthworms per square km.
When an object is approaching you while making a sound, the pitch of the sound is perceived
to be
fluctuating
unchanged
higher
lower
Answer:
Higher
Explanation:
The frequency is perceived to be higher than the actual frequency. This is due to the relative motion of sound source which approach to us.
The correct answer is C. higher.
Hope it helps and have a great rest of your day/night!
Certain bacteria produce a chemical that makes them resistant to penicillin. Since these bacteria reproduce asexually, they usually produce offspring that...?
Bacteria that produce a chemical making them resistant to penicillin typically pass this resistance on to their asexually reproduced offspring, increasing the proportion of penicillin-resistant bacteria in the population.
Explanation:Since these bacteria reproduce asexually, they usually produce offspring that are also resistant to penicillin. This resistance typically arises through a mutation that enables the bacteria to synthesize an enzyme called penicillinase, which can break down penicillin. This ability to degrade penicillin is especially concerning with bacteria like Methicillin-resistant Staphylococcus aureus (MRSA) that reproduce by growing and dividing into two, passing on the resistance trait to subsequent generations. One of the main reasons for the development of resistant bacteria is the overuse and incorrect use of antibiotics. The misuse, such as not completing a full course of prescribed antibiotics, leads to natural selection where non-resistant forms are eliminated and the proportion of resistant forms is increased in the population. Even when bacteria are separated by a filter that prevents cell movement but allows free exchange of cellular material, resistance can spread as sensitive bacteria acquire resistance through genetic mechanisms such as lateral gene transfer.
Habitat ____________ splits ecosystems into pieces and makes populations more vulnerable to disturbances or climate change.
Answer:
fragmentation
Explanation:
hope this helps
Answer:
Habitat FRAGMENTATION splits ecosystems into pieces and makes populations more vulnerable to disturbances or climate change.
Explanation:
Habitat fragmentation is discontinuities in a organism's preferred ecosystem, causing disturbance in a population and ecosystem decay. .... populations more vulnerable to disturbances or climate change.
what is skepticism
Answer: skepticism involves the application of skeptical philosophy, critical-thinking skills, and knowledge of science and its methods to empirical claims, while remaining agnostic or neutral to non-empirical claims
Explanation:
Answer:
Explanation:
Skepticism is an attitude which raises questioning, and doubts towards a claim, belief, dogma, knowledge, result of a experimental process or methodology used for conducting the experiment or research, theory, law or statement. It also generates the curiosity which can be used to create a new innovation, research and experiment.
What is not a benefit of genetic engineering of the tomato
A. it is sweeter
B. it is firmer
C. it has a longer shelf life
D. it has less seeds
Answer:
its a possiblity its A
Explanation:
All mentioned traits (sweeter taste, firmer texture, longer shelf life, and fewer seeds) are possible benefits from the genetic engineering of tomatoes, none of them is a disadvantage or does not benefit. However, whether these are seen as benefits can often depend on individual preferences.
Explanation:
Genetic engineering is a field that involves manipulating an organism's genes directly by transplanting DNA from another organism. In the context of tomatoes, it is said that all options A, B, C, and D are potential benefits of genetic engineering. Therefore, none of them is a disadvantage or does not benefit. By engineering the tomato's genes, it can indeed become sweeter, firmer, gain a longer shelf life, and have less seeds. Although, it is important to note that whether these are seen as benefits can often depend on individual preferences, especially when it comes to taste and texture.
Learn more about Genetic Engineering here:https://brainly.com/question/34206889
#SPJ3
Of the three species, Acer rubrum, Acer sucre, and Pseudotriton rubrum, which are more closely related? A. Acer rubrum and Acer sucre B. Acer rubrum and Pseudotriton rubrum C. Acer sucre and Pseudotriton rubrum D. There is no way of knowing without more information.
Answer:
a. Acer rubrum and acer sucre
Explanation:
The acer sucre and acer rubrum are more related to each other, since in fact, we can see in the taxonomy of their name that they belong to the same genus. The genus is indicated in the first name of the species
The acer species refers to the trees that have characteristic tips in their leaves and a suitable wood with a hardness that in antiquity was ideal for the manufacture of spears. More popularly it includes a group of species of Arces
The pseudotriton rubrum is a kind of Salamander
what other fossil fuel is a byproduct of petroleum drilling? a.nuclear b.coal c.natural gases d.biomasswhat other fossil fuel is a byproduct of petroleum drilling? a.nuclear b.coal c.natural gases d.biomass
Answer:
D. biomass
Explanation:
So sorry if im wrong.
Earth’s surface absorbs forty-six percent of incoming solar radiation. Would more of this energy be absorbed in deserts or in rain forests? Explain your answer.
Answer:
The rain forests would absorb more incoming solar radiation because rain forests have darker colors and rougher surfaces than deserts. Dark colors absorb more energy than light colors and rough surfaces absorb more energy than smooth surfaces.
Explanation:
correct on Ed
The energy absorbed by rain forests is more than the desert from the incoming solar radiation.
Why Rain forest absorbs more energy than the desert?
Rain Forests are characterized as closed and continuous tree canopy, moisture dependent vegetation.
These are characterized by a warm and wet climate with no substantial dry season along with receiving an average rainfall of not less than 168 cm and exceed 1000 cm.
Desert on the other hand is a barren landscape with little precipitation and living conditions are hostile for plants and animals.
The rain forest absorb more energy than desert because:
- Darker appearance resulting into more absorption
-Thick canopy which prevents the light to penetrate deeply
- Forests are hard and erect whereas deserts have loose granules thus cannot absorb more energy as it keeps on dispersing.
A natural rainforest emits and absorbs vast quantities of Carbon Dioxide and on a global scale, long term fluxes are approximately in balance so that an undisturbed rainforest would have a net impact on atmospheric CO2 levels.
To learn more about Tropical Rain Forest here
https://brainly.com/question/17313717
#SPJ2
based on physical features this cell is most likely an ______ cell
A. eukaryotic plants
B. eukaryotic animal
C. prokaryotic bacterial
B. Eukaryotic animal
Jim and Lisa both have insect collections. Jim is grouping and comparing the properties of the insects. Lisa is comparing and contrasting different insects.
Which one is doing a science investigation?
A.
Lisa only
B.
both Jim and Lisa
C.
Jim only
D.
neither Jim nor Lisa
Final answer:
Both Jim and Lisa are engaging in science investigations by collecting and organizing data through comparing and contrasting the properties and differences of insects, which are essential practices in scientific research. Option B is correct.
Explanation:
When considering who is conducting a science investigation between Jim and Lisa, we must look at the actions each is performing. Jim is grouping and comparing the properties of insects, while Lisa is comparing and contrasting different insects. Both activities involve collecting and organizing data, which is a fundamental part of the scientific method. Therefore, the answer is B. both Jim and Lisa are doing a science investigation since both are engaged in activities that involve observing, comparing, and contrasting, which are key components in any scientific exploration. These comparisons can lead to forming hypotheses, which could then be tested through further investigations. In science, such comparisons and contrasts are crucial as they can provide insights into relationships, structures, and behaviors that contribute to scientific understanding.
Juvenile Red Snapper are often found around natural or artificial reefs. If overfishing occurs in these areas, what would you predict will happen to the red snapper population?
The Red Snapper population will be affected greatly as juveniles will not reach adulthood to spawn.
The Red Snapper population will be affected marginally because this will only affect the juveniles.
The Red Snapper populations will benefit because the adults will have less competition from juveniles.
The Red Snapper populations will be unaffected unless they are specifically targeted by fishing.
Answer:
The Red Snapper population will be affected greatly as juveniles will not reach adulthood to spawn.
Answer:
Option A, The Red Snapper population will be affected greatly as juveniles will not reach adulthood to spawn.
Explanation:
The red snapper population is being fished during juvenile age and hence they do not grow into adults and produce offsprings.
The rate at which the juvenile offsprings are being killed is extremely high as compared to the rate at which they are reproduced as most of the red snappers are killed before they reach the age of fertility.
Due to this imbalance in the birth and death rates of red snapper, there will be tremendous decrease in the population of red snapper.
Hence, option A is correct.
Faults are generally closely associated with
Answer:
boundaries of the tectonic plates
Explanation:
The faults are cracks that appear on the Earth's crust. They can vary a lot in length, depth, and width, and they are found in multiple places around the globe. In general, the faults are associated with the boundaries of the tectonic plates, or rather they are the ones that are the boundary between the tectonic plates, mostly between the subduction zones and the transform plate boundaries. The faults are made out of two basic parts, the foot wall and the hanging wall. The foot wall is the one that is bellow the ground, while the hanging wall is sticking above the ground. There's few types of faults, such as the strike-slip faults, dip-slip faults, and oblique-slip faults.
In order to survive, all organisms must carry out
A. autotrophic nutrition
B. heterotrophic nutrition
C. enzyme-Controlled reaction
D. the process of reproduction
Answer:
Enzyme-controlled reactions (digestion, synthesis, growth, regulation, reproduction, circulation, excretion)
Explanation:
Why does dna rely on rna?Why can’t dna deliver the instructions to the ribosomes directly
Answer:
Why does dna rely on rna?
Transcription is carried out by the DNA-dependent RNA polymerase that replicates the series of the DNA chain into RNA. To start transcribing the sequence, the RNA polymerase binds to the series of DNA called the promoter and divides the DNA strands. It then copies the sequence series into the messenger RNA copy until it hits the part of DNA named the Terminator, where it halts and detaches from the DNA. As with being DNA-dependent DNA polymerases, RNA polymerase II, this protein that transcribes most of these factors at the human genome, controls as part of the huge protein structure with multiple regulatory and accessory subunits.
Why can’t dna deliver the instructions to the ribosomes directly
Transcription begins at the nucleus, which is the mind of the cell. It contains DNA which include all the messages we want to create proteins. These messages are taken by those ribosomes outside the nucleus. DNA is also valuable to be run in the cell, it wants to be there as a kind of professional material. Then this cell gets another copy of it in the process called transcription.
Because the DNA can't leave the nucleus to send it's information across to other organelles of the cell.
Deoxyribonucleic acid functions in the cellDeoxyribonucleic acid (DNA) is the genetic molecule of a cell that is found in the nucleus.
Ribonucleic acids (RNA) are equally genetic materials of the cell which has single-stranded chain of cells that processes protein. The types of RNA are:
messenger RNA (mRNA), transfer RNA (tRNA), andribosomal RNA (rRNA)DNA is responsible for storing and transferring genetic information, while RNA (messenger) directly codes for amino acids and acts as a messenger between DNA and ribosomes to make proteins.
Therefore, because the DNA can't leave the nucleus to send it's information across to other organelles of the cell.
Learn more about Deoxyribonucleic acid here:
https://brainly.com/question/19238665
Geologists conclude that the clasts in Layer A are older than the layer itself. Which geologic principle do the geologists use to draw this conclusion?
Answer:
Principle of inclusion
Explanation:
The principle of inclusion states that "fragments of rocks found in another rock is older than the rock itself".
This principle is very important for relative dating of rocks. It proposes that a rock containing inclusions or fragments of other rocks is younger than the fragments itself. This shows that the rock fragment was already in place before the current rock hosting it formed.
Some rocks can contain fragments of different rock types. The different rock types when encountered are older than the host rock. This is the principle of inclusion.
Which plant structure is MOST like the hyphae of fungi?
Answer:
The roots as they absorb water and nutrients.
Answer:
In addition, fungal "hyphae," which are long, thread-like structures, resemble the roots of plants.
Explanation:
What happens to the total population when the birth rate is at 40 and the death rate is at 15?
If the birth rate in a population is 40, and the death rate in that population is 15, then the population will be experiencing growth. The growth will be 25 on every 1,000 people. If this trend continues for longer period, then the population will start to become younger and younger, making the basis of the population pyramid wider, while the top part of it smaller and smaller. This demographic situation in modern times seems to be present only in the less developed countries, with the majority of the transitioning countries having much decreased population growth, and the more developed countries having more deaths than births, thus being aging populations.
Answer:it increases
Explanation:
In a population of 100,000 visuals 100 new individuals were born at 200 individuals over the course of a year died which equation shows how to calculate the population growth rate of this population
Answer:
100,000+100-200=x
Explanation:
100,000+births-deaths
100,000+100-200=x
Answer:
y = -100x + 100,000
Explanation:
the 200 deaths per year and 100 births per year even put to -100 per year where each year is x and the starting population was 100,000 so +100,000
Which of the following statements is true?
A) Acquired mutations are passed down from parent to offspring.
B) Mutations are the only way to add new genes to a gene pool.
C) Hereditary mutations are caused by external factors, such as radiation.
D) Only somatic mutations are important to evolution because they can be inherited.
it's either b or a I just studied this I believe its b though I know it's not d becuade hereditary mutations are passed dow. from parents not outside sources and it's not d because it's not true
Acquired mutations occur in somatic cells and cannot be passed down to offspring, while only mutations in germ cells can be inherited and are relevant to evolution.
The question relates to our understanding of genetic mutations and how they play a role in heredity and evolution. Not all statements provided are correct, but the right answer in context of these options is not explicitly provided. To clarify: Acquired mutations are mutations that occur in an organism's somatic cells and are not hereditary, meaning they are not passed down from parent to offspring. On the other hand, mutations that occur in germ cells (sperm and egg cells) can be passed on, and these hereditary mutations are essential for the process of evolution because they can introduce new genetic information into a population. Additionally, while it is true that mutations are a source of new genes in a gene pool, they are not the only way new genes can be added; gene duplication and lateral gene transfer can also contribute to this.
How do earthworms get oxygen to their cells?
They breathe through their skin. Air dissolves on the mucus of their skin, so they MUST stay moist to breathe.
If worms dry out, they suffocate. As fresh air is taken in through the skin, oxygen is drawn into the worm's circulatory system, and the worm's hearts pump the oxygenated blood to the head area.
Earthworms breathe through their skin which contains mucus where the atmospheric air is dissolved. This dissolved air reaches the circulatory system which transfers oxygen to each cell in a random manner.
Why earthworms breathe through the skin?Earthworms breathe through their skin because for maintaining their surface body moist and slimy which is essential for their metabolic activities.
Therefore, it is well described above.
To learn more about Earthworm physiology, refer to the link:
https://brainly.com/question/20992190
#SPJ2
what cellular process releases energy by breaking down glucose when oxygen is not available
a. aerobic Respiration
b. The Calvin cycle
c. photosynthesis
d. Anaerobic Respiration
Answer:
d
Explanation:
because its food that i choke on
Answer:
d. Anaerobic Respiration
Explanation:
Living cells require energy to perform their various life functions. This energy is obtained by breaking down high energy storing food molecules in a process called CELLULAR RESPIRATION. Cellular respiration is a metabolic (catabolic) process that breaks down glucose to release carbondioxide, water and ATP (energy).
Cellular respiration can either be aerobic or anaerobic depending on whether oxygen is present or not. Aerobic respiration occurs in the presence of oxygen while anaerobic respiration occurs in the absence of oxygen. In the process of aerobic cellular respiration, Oxygen acts as a final electron acceptor in the ETC while in anaerobic respiration, another molecule other than oxygen e.g Sulfur acts as the final electron acceptor.
Some bacteria and yeast employs anaerobic respiration.
What is your definition of the word biochemistry
the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.
Hello there!
Great a question.
I’m not going to justness copy the dictionary definition of the word but I’ll give you more of my own definition.
When people study biochemistry, there studying the chemical processes relating to organisms. Remember an organism is any living thing.
A(n) _____is the basic unit of matter.
Answer:
Atom
____
Hope this helps you! :)
When magnesium combines with sulfur to form magnesium sulfide, it is oxidized to Mg2+. Which statement is true about this reaction?
A.
It involves gain of electrons.
B.
It involves loss of electrons.
c.
It involves loss of oxygen.
D.
It involves gain of hydrogen.
Answer:b
Explanation:
Answer:
The Answer is B:
Loss of electrons
Explanation:
Correct on Plato
The rock in the picture is rhyolite, an extrusive igneous rock. Based on its appearance, how would you classify this rock?
Answer:
The Rock is picture is Felsic.
Explanation:
Rhyolites are volcanic rocks that are igneous. The main component of these rocks is Silica and based on silica content they are termed as Mafic, Felsic, Intermediate and ultramafic. Felsic rocks have the highest silica content (more than or approximately 65%) and are lighter in color than other rocks. Mafic, ultramafic and intermediate rocks contain less content of Silica. They have high content of magnesium and mostly are of dark color.
Answer:
The Rock is picture is Felsic.
Explanation:
How does yellow fever spread?
Answer:
mosquitoes
Explanation:
Yellow fever spreads by mosquitoes
Choose each statement that is scientific
Answer: the first and last one. The other two do not have supporting reason or evidence.
Explanation:
Answer:
The correct answer will be-
1. Organism inherited the genetic material helped to survive and reproduce (first option).
2. The data of controlled scientific investigation (last option).
Explanation:
Scientific thought is based on the scientific method as it tests and verifies the scientific thought to become established.
The scientific thought is based on , observations, evidence and data collected from the experiments and previous research work. The thought should not be based on personal opinion and imaginary objects which could lead to the discrepancies in establishing a thought.
In the given question, the first statement is supported by the evidence and theories and the last statement is supported by the data of scientific investigations,
Thus, the selected options are the correct answer.
what is the cell theory as it is stated today
Answer:
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory.
Answer:
New CELLS are PRODUCED by division of EXISTING cells.
Explanation:
A cell that is already in your body gets divided in order to produce new cells.
ON A TIMER!!!
During the formation of metamorphic rocks, what most likely causes pressure to increase?
Answer:
Explanation:
Increased heat and pressure will change the sedimentary rock into metamorphic rock. Coal is formed when plant debris at the bottom of bodies of water experiences pressure. ... Pressure causes these and other particles to form sandstone at Earth's surface.
I need help on this question.
Earth’s global temperature has changed greatly in the past hundreds of years. This is due to how much energy the planet is receiving from the sun and how it radiates back. Another cause is humans, due to deforestation, burning of fossil fuels, pollution, etc.