Answer:
Variations are caused by mutation. random mating between organisms.
Explanation:
Regulation Of Gene Expression.
Answer:
Students can also choose directed electives that allow them to get a certificate in Child Nutrition Program Management.
Explanation:
Light lets plants grow for the animals eat them
temperature lets the animals know when they have to hibernate or come out and hunt
i think soil composition helps the animals to get new types of food or lets them get water ?
