Some of the organisms might have different traits that allow them to survive better than others within the population. That way the population has a greater chance of surviving.
Small population usually cant find a mate or be able to continue a species.
gravity... it's working ohh. c.
Answer:
The answer is 2; Lake.
Explanation:
A lake (from Latin lacus) is a large body of water (larger and deeper than a pond) within a body of land. As a lake is separated from the ocean, it is not a sea. Some lakes are very big, and people in the past sometimes called them seas. Lakes do not flow like rivers, but many have rivers flowing into and out of them.