What kind of questions do biologists attempt to answer?

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic