DNA copies itself in order to: 1.build new cells from existing ones
2.have extra DNA available
3.because Coach B said so
4.cause mutations

Microorganisms aren’t all decomposers; in fact, many act as producers or primary consumers in an ecosystem. how do microorganisms that act as producers benefit the rest of an ecosystem in terms of energy transfer? what about microorganisms that act as primary consumers?

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles