Answer:
"Animals will migrate to other regions in search of food" Whenever an area in a forest is cleared up to build a road or because of any other reason the habitat of the animals residing there is destroyed.
Explanation:
Science
It is a vein and it carries the blood back to the heart through the vena cavas so the blood can be reoxygenated
Answer:
DNA mutation causes genetic variation by altering the genes of individuals in a population. Gene flow leads to genetic variation as new individuals with different gene combinations migrate into a population.
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism’s DNA that create diversity within a population by introducing new alleles.