How do scientists know about the liquid outer core? how do scientists know that the outer core is liquid? need major

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

What terms describes being out of water after being submerged

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 .