Which statement describes natural selection? it is the primary mechanism for evolution. it must act on structural traits. it acts to cause overpopulation. it causes learned skills to become heritable traits.

It is the primary mechanism for evolution. -describes natural selection.

This natural selection is a process which was first proposed by Charles Darwin and it states that the organisms which better adapt to their environment tend to survive and produce more offspring. This theory is now believed to be the main process that brings about evolution.

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.