Relatively small geographic areas with high concentrations of endemic species and a large number of endangered and threatened species are known as

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

Which characteristics must an object possess in order to be considered alive?