Please help me do 2 and 3 if you can thx sm

Name the glands associated with human digestive system

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 .

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil