Answer:to establish biological factors
Explanation:Biological factors are useful and crucial in explaning variations that exist between groups who may share the similar environment which may give an explanation of why some individuals are thin while others are obese Biological factors refers to things like genetic influence ,hormone levels , nutrition and gender.
They are completely different even on their views of certain things because they don't all think alike nor do their government act the same so states are republican some are democratic and other are liberals.
Answer:
The President of the U.S is at the head of the Executive Branch of Government. Hope this helps =D
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