An important example of a "positive feedback loop" in the polar climate system is:
a.Scientists in remote places check on each others instruments.
b.Warming ocean water opens new areas for marine species.
c.Warmer winters cause more plant growth, providing more food.
d.Sea ice melt opens more ocean to sunlight, causing more melt.
Answers
Answer: D
Explanation:
A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
In choice D melting of sea ice opens more ocean to sunlight which causes more ice to melt which demonstrated a positive feedback loop.
The significant example of a positive feedback loop in the climate system i.e. polar should be at the time when the ice of the sea should be melt that there should be more ocean that results in more melting.
The following information related to the positive feedback loop is:
If the direction varies so it should result in an extra change in a similar direction.Like if we take an example that if there is an increase in the substance concentration so it results in the feedback that generated the continued increase in the concentration.Therefore we can conclude that option d is correct.
All other options seem incorrect.
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Related Questions
Which component of a DNA synthesis reaction is an enzyme?
Answers
Answer:
DNA polymerase
The enzyme that synthesizes DNA, DNA polymerase, can only add nucleotides to an already existing strand or primer of DNA or RNA that is base paired with the template. An enzyme, DNA polymerase, is required for the covalent joining of the incoming nucleotide to the primer.
Explanation:
hope it helps!
what is the name of the protective structure that forms around an embryo
Answers
Answer:
a baby or Amnion
Explanation:
Which list shows the levels of organization of an organism in hierarchical order from left to right, from the least complex to the most complex?
Answers
Pleaseee help me out.
The T allele codes for tall stems in pea plants and the t allele codes for short stems. If T is
dominant and t recessive, what percentage of the offspring would you expect to have each
phenotype from a cross of Tt x tt?
a. 75**
tall and 25% short
b. 25% tall and 75% short
C. 50% tall and 50% short
d. 25% tall and 25% short
Answers
Answer:
50% tall and 50% short.
Explanation:
T t
t Tt tt
t Tt tt
why are data organized into tables and graphs?
Answers
hi how old am i What is the dominant religion in North and South America? A. Islam B. Judaism C. Hinduism D. Christianity Please select the best answer from the choices provided
Answers
Answer:
D. Christianity
Explanation:
Which choice describes a community?
a forest of birds, insects, and squirrels
a desert of sand, rocks, hawks, and snakes
a hole in which a snake lives
the desert
Answers
Answer:a forest of birds, insects, and squirrels
Explanation: A community consists of only biotic (living) factors with multiple different populations (different groups of animals)
Are all genes that are passed on advantageous? Why or Why not?
Answers
Answer:
no because certain genes could be bad and negatively affect the thing with those genes
Explain how an atom of carbon in the atmosphere becomes part of the muscle of the wolf.
Answers
Answer:
Explanation:
Carbon atoms in the atmosphere are in the form of CO2
Plants convert CO2 into simple sugars , animals eat the plants and use the sugars for fuel and building tissues like muscle
Select the correct answer from the drop-down menu.
When multiple glaciers start their downward flow from a single point, they create a .
Answers
Answer:
They create a Mountain Peak
When multiple glaciers start their downward flow from a single point, they create a Mountain peak. So, the correct option is B.
What are Glaciers?A glacier is a sizable, slowly moving mass of ice that develops over a considerable amount of time as a result of the buildup of snow and ice. In areas where the average temperature is below freezing and there is enough snowfall to offset the melting that takes place during the summer, glaciers can be discovered. They can occur at lower elevations in some places, although they are mainly found at high altitudes or in the polar regions.
When several glaciers begin to flow downward, they build something resembling a pyramid. The mountain peak is created as a result of the glacier's movement from a single location. Due to the simultaneous movement of several glaciers to the ground, a pointed structure has recently created.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
when multiple glaciers start their downward flow from a single point, they create a [mountain cliff] or [mountain peak]
Select all that apply.
Which of the following cells would not divide using mitosis?
gamete
mammal cell
flowering plant cell
fungal cell
bacterial cell
Answers
Answer:
Gamete and bacterial cell.
How is the availability of resources affected by the increase in human populations in a given geographic area?
Answers
Answer:
Increase in population less resources avilable
Explanation:
Increase in population means more demand for resources hence in a certain geographic location the resources available will be limited as the population grows. Therefore the availability of resources will be affected by the incraese in population
what is a body plan (bio)
Answers
mark as brainliest pls
Answer:
body plan. a set of morphological and developmental traits. Animal Overview. -mulitcellular eukaryotes. -heterotrophs that ingest their food.
Explanation:
A body plan, Bauplan, or ground plan is a set of morphological features common to many members of a phylum of animals. The vertebrate body plan is one of many: invertebrates consist of many phyla.
HOPE IT HELPS : D
why is nectar important for insects?
Answers
Answer:
Nectar is important for insects because.. Nectar is an ecologically important item, the sugar source for honey. It is also useful in agriculture and horticulture because the adult stages of some predatory insects feed on nectar. For example, the social wasp species Apoica flavissima relies on nectar as a primary food source. In turn, these wasps then hunt agricultural pest insects as food for their young.
The gluten-free diet was originally intended for people with celiac disease, but it’s now become a new fad diet for the general population. Many people state that gluten-free diets are beneficial for people who aren’t sensitive to gluten, while others suggest that there’s no benefit. Use credible resources to evaluate the argument yourself. Do you think there’s sufficient scientific evidence to support the use of a gluten-free diet in people who aren’t sensitive to gluten? Provide evidence that supports your argument.
Answers
Answer:
The gluten free diet is helpful for the people that are sensitive to food with gluten it which occurs due to the celiac disease. It was originally meant for the such people but it becomes a new fad. However, there is no compelling evidence to support that gluten free diet helps in health improvements n non sensitive people.
In other hand there are majority of doctors are against the use of gluten free diet is not good for various body organs like heart. A study concluded that there are lower risk of heart disease in people take more gluten. Doctors and various study suggests that people with no celiac disease should not avoid gluten.
Answer:
There’s no benefit to a gluten-free diet for people who aren’t sensitive to gluten. Many websites state benefits of a gluten-free diet. These benefits range from weight loss to improved heart health. None of these sites backed up their claims with scientific research. More credible sites consistently state that there’s no scientific research to back up these claims. Right now, there’s no evidence that supports the benefits of a gluten-free diet in people who aren’t sensitive to gluten.
Explanation: just took test !!
Mention the tools that have been used for tracing evolutionary relationship of humans
Answers
Answer:
Human evolution has been studied by using the various tools of tracing evolutionary relationships like excavating (digging earth), carbon-dating, studying fossils and determining DNA sequences.
Aerobic Respiration takes place in the _________.
A. molecules
B. mitochondrion
C. stomata
Answers
Answer:
B
Explanation:
The structure of the mitochondrion is key to the process of aerobic (in the presence of oxygen) cellular respiration, especially the Krebs cycle and electron transport.
The reaction is called aerobic respiration because oxygen from the air is needed for it to work. Energy is released in the reaction. The mitochondria , found in the cell cytoplasm, are where most respiration happens.
The nucleus in both plant and animal cells “specializes” the cells so they can do different things- for example, a liver cell or a muscle cell do different things. Thinking about plants or trees, what special functions might different cells in a tree or plant do?
Answers
Answer:
od21xef3
Explanation:ewwe
What subject does Biomedical science fall under?
Answers
Answer:
a biomedical science degree, you will usually need five GCSEs (A-C) including maths and English, plus three A levels, preferably including biology and chemistry. Certain level 3 qualifications may be acceptable such as the diploma in applied science
Mammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin.
Which statement best relates why these animals have so much blubber?
O Lipids in blubber insulate the animals from cold water.
O Proteins in blubber help the animals move to stay warm.
O Carbohydrates in blubber provide all the energy that the animals need to stay warm.
O Nucleic acids help build the lipids in blubber, which keep animals warm by regulating cell activities.
Answers
Answer:
Lipids in blubber insulate the animals from cold water.
Explanation:
Lipids are fatty tissue, or fats in the cells. Blubber is fat. The fat helps insulate animals from cold water, especially in the Arctic known for being freezing. Fats can help maintain and keep body heat, hence why skinnier people are colder. Without lipids, they would most likely freeze.
Answer:
Lipids
Explanation:
Its a
Felipe believes that whenever the Moon is in the position that is shown from above (top view) in Diagram A, the Moon always looks completely bright in the view from Earth, as shown in Diagram B. Is Felipe correct? If he is correct, explain why the Moon always looks bright from Earth in that position, and explain how he should show light on the Moon in Diagram A. If he is incorrect, explain how else the Moon can look when it is in that position.
Answers
Answer: Felipe is wrong.
Explanation:
In diagram A, we can see that the light comes from the left, it first impacts on the Earth, and then we have the Moon.
Now, you can model this situation with a flashlight (the Sun) a basketball (the Earth) and a tennis ball (the Moon)
When you point with the flashlight at the basketball, the basketball will look bright, but it will cast a shadow behind it. This shadow will cover the tennis ball, and almost no light will reach the tennis ball, so it will not look bright.
This phenomenon is called a lunar eclipse, and this happens when the Earth is in between the Sun and the Moon. When this happens, we see the moon a bit darker and more reddish.
Felipe is incorrect, as it will not be possible to see the moon if it is in the position shown in the diagram.
We can come to this answer because:
It is only possible to see the moon when it is reflecting sunlight.In this case, no other type of celestial body must be in front of the moon, blocking the sunlight.As we can see in the question above, sunlight is being emitted from left to right.Although the moon is in the right direction to reflect this light, the earth is in front of the moon.Therefore, sunlight will not shine on the moon, because the earth will block it and cast a shadow over the moon.Therefore, it will not be possible to see the moon, as Felipe said.
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in the term 2pq of the Hardy-Weinberg equation. Why is the multiplication by two necessary?
PLEASE HELP ME!!!!!
A-The term is multiplied by two because the effect of both the alleles is taken into account.
B-There are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm
C-The frequency of the dominant allele is doubled because of its stronger effect on the phenotype.
D-The term is multiplied by tvo to account for doubling of the population in each generation.
Answers
Answer:
The correct answer is : option B.
Explanation:
Hardy–Weinberg equilibrium is a mathematical model that states that genotype percentage or frequency in a population and allele in a population remains stable or constant to generations if there are no evolutionary influences present.
Hardy Weinberg equation is :
P²+2pq+q² = 1
Here, p² represents the frequency of genotypes dominant homozygotes (AA) in a population in equilibrium. The term 2pq represents the frequency of heterozygotes (Aa) as there are two ways of developing heterozygous individuals either dominant from the egg and recessive from sperm or vice versa. and the term q² represents the frequency of recessive homozygotes (aa).
Thus, the correct answer is : option B.
There are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm, the frequency of the heterozygous allele is multiplied by 2 (option B).
The Hardy–Weinberg equation is an equation which expresses the principle of Hardy-Weinberg equilibrium. The Hardy-Weinberg equilibrium states that in the absence of external evolutionary factors which disturbs equilibrium, the amount of genetic variation in a population will remain constant from one generation to the next.
The Hardy Weinberg equation is given as: p² + 2pq + q² = 1
In the equation above,
p² represents the frequency of dominant h0m0zygotes (AA)q²represents the frequency of recessive h0m0zygotes (aa),2pq represents the frequency of heterozygotes (Aa),p represents the allele frequency of the allele A and q represents the allele frequency of the allele a.The sum of all the three frequencies equal to 1 representing all the possible allele combinations.Since there are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm, the frequency of the heterozygous allele is multiplied by 2.
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Which is the largest organ of the human body?
Answers
Answer:
The skin.
Explanation:
The skin is the largest organ in the human body.
Answer:
skin is the biggest
Explanation:
4
Which is a function of protein macromolecules?
O A. Storing energy in bonds
O B. Making codes for organisms
O C. Making muscle tissue
O D. Insulating organs in the body
Answers
Which type of selection leads to increased phenotypic and genetic variation? directional selection disruptive selection stabilizing selection species selection
Answers
Answer:
diruptive selection/ diversifying selection
Explanation:
disruptive selection often leads to more variations in species
The circumstance that concludes whether the organism will be able to accommodate and endure in the changed conditions is called selection.
The correct answer is:
Option B. Disruptive selection.
This can be explained by:
Disruptive or diversifying adaptation occurs when there is a change in population genetics in which the traits are valued over intermediates.This type of assortment supports either the dominant or the recessive trait but do not favour intermediates.For example, in selection between tall, short or intermediate organisms the tall and short will be selected over the medium heightened organism.Therefore, disruptive selection will lead to increased phenotypic and genetic variation.
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Use the image to answer the questions.
B
с
is a producer
is a consumer.
Answers
C is a consumer
A is the consumer
Why don't ecosystems systems exist between fresh and salt water systems?
Answers
Answer: The transition from salt to fresh water is turbulent, vulnerable, and incredibly bountiful
True or False. Natural disaster disturb most populations within a community and break interactions between organisms
Answers
Do all organisms fight for survival
Answers
Answer:
Yes
Explanation:
To survive, all organisms must compete for resources.
This chemical equation represents the burning of methane, but the equation is incomplete. What is the missing coefficient in both the reactants and the products?
CH4 + ____O2 → CO2 + ____H2O
A.
0
B.
1
C.
2
D.
3
E.
4
Answers
Answer:
C) 2
Explanation:
quick maths i guess
Answer:
C.) 2
Explanation: