Which feature is common to gills, lungs, and tracheae?

During binary fission, what events must occur before the cell splits into two new cells?

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 .

Amajor source of energy for your body comes from