The sentence that is true is A galaxies are holder together by gravity it is not D because galaxies are real its not C because they are not being pulled apart and its not B because galaxies are held together.
Answer:
a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment.
Explanation:
Answer:
Because males are never carriers for x-linked trait, only females are carriers which gives them a lower chance of receiving the trait. While males can either have the trait or not have it.
Because a cell contains only one copy of DNA “program,” it must make another copy before it divides so that each cell can have a copy .
