5.The land area that supplies water to a river systemis called aa. divide. b.wetland. c.watershed. d.tributary.

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

As a small change in a person's dna can cause a genetic disorder

What is the next step in the process after a substrate enters the active site of an enzyme