During a windstorm, a large old tree fell in the forest. As it came down, it trapped a young sapling about 5 meters tall underneath it. The top of the
Auxin and gibberellin in the sapling's stem will cause a gravitropic response in the sapling, and its stop will grow upward even though it is held down.
Answer:
The ecologist provide information about the ecosystem.
Explanation:
The ecologist is a person who provide information about the relationship between organism and its environment. The ecologist tell the people about the benefits of plants that exist in our environment. Biomass is widely used as source of energy in a community which is gained from cutting of trees. The removal of trees causes damage to the whole ecosystem so the people of community used less biomass or other materials as a source of energy.
Natural selection act directly upon <u>Alleles</u>
Explanation:
Genes, such as that of fur color, have many variants called alleles. Natural selection act on the alleles and chooses the best fit for an environment and eliminates the disadvantageous ones from the population over generations. Mutations are a rare occurrence that increases the number of allelic variants of a genes on which natural selection can act upon.
