What do al scientists have in common

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.

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?