Answer:
Each villus, in turn, has thousands of even smaller projections called microvilli (singular: microvillus).
Explanation:
The villi contain capillaries, which are tiny blood vessels. Nutrients are absorbed into these capillaries across the surfaces of the villi and microvilli. Because there are millions of these tiny projections, they greatly increase the surface area for absorption.
Answer:
The correct answer would be A. nitrate and glucose.
Auxin or Indole-3-acetic acid is a plant hormone which regulates the growth of the plants.
The biosynthesis of the auxin uses tryptophan as the precursor. Tryptophan is first converted to IPA (another amino acid) which is then converted to IAA (Indole-3-acetic acid).
Similarly, the biosynthesis of tryptophan is started from shikimic acid (cyclohexane) or anthranilate (aromatic acid).
Thus, ultimately it requires glucose and nitrogen form the production of auxin.
In addition, the given picture shows that auxin is composed of carbon, hydrogen, nitrogen, and oxygen. All the molecules required for the production of auxin can be provided by glucose and nitrate.
Answer:
Because it doesn't specify the organisms.
Explanation:
"A biome is a community of plants and animals that have common characteristics for the environment they exist in."
An accompanying diagram is need to answer this question. Mechanical or physical weathering involves the break up of rock into smaller pieces. Mechanical weathering does not change the chemical composition....it is just broken down into smaller pieces.
In frost wedging the constant freezing and thawing will break rocks into smaller pieces. This occurs in temperate mountainous regions.
Salt wedging occurs at coastal areas where ocean water deposits the salt in the rocks. Peeling is also known as exfoliation and this occurs in desert regions rocks constantly contract and expand as the temperature drastically changes.
Biological weathering is caused by plant roots or burrowing animals. Their actions cause rocks to be broken into smaller pieces.
The diagram that does not demonstrate any of these activities is not likely to be mechanical weathering.
Answer:
do it as biggest to smallest, cells from the start and the balls towards the end.
Explanation: