10 points

how does mass extinction affect species that survive?

a. there are no surviving species if a mass extinction occurs.

b. they will soon become extinct.

c. they combine gene pools.

d. they fill new roles in the changed environment.

Which layer will become saturated first when rain falls?

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.