Answer:
pulls the planets in orbit around Earth
Explanation:
Genetic variations occur <u>randoml</u>y among individuals of any population.
Hope you got the answer ;)
<span> a </span>group of similar<span> cells that work together to </span>perform<span> a specific job in the body. a group of organs working together to </span>perform<span> body </span>functions<span>.</span>
Crossing over can create genetic variation. Crossing over is when chromosomes cross over they give + take a part of another chromosome which can create different variation in genes.
The answer is called respiration. Hope this helps.