Describe the movement of the earthworm using the following terms. (Setae, circular muscles, longitudinal muscles, segments)

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

What changes the stability of the element

Why are human population trends difficult to predict?