What are the three main parts of the endangered species act?

forbids government and private citizens from harming endangered and threatened species or their habitats

-ESA forbids trade in products made from species that are on the list

-requires the U.S Fish and Wildlife Service to maintain the official list of endangered and threatened organisms, and to develop recovery plans for each protected species.

the correct answer is:

a population changes in response to a change in the environment.

the answer is b.) hydrogen bonds between bases.