Answer:
Due to environmental conditions.
Explanation:
With the passage of time, environmental conditions change which causes the evolution of of four legged land animals from fish like creature. This change occurs due to change in environment. In water, there is no need for legs because fish moves with the help of fins and tail but the organisms that lives on land has legs in order to move from one place to another so we can say that change in the physical structure of organism occurs due to environment.
<span>a foot or more in length, and each cell contains hundreds of nuclei</span>
Answer:
Oxygen + Sugar → Energy + Carbon dioxide + Water
The type of evolutionary mechanism, genetic drift
Answer:
Population
Explanation:
A population is a group of organisms of the same species that live in the same area at the same time.
