An astronaut took her backpack to the moon. If her backpack has a mass of 8 kg and the acceleration due to gravity is 1.6 m/s/s, what is the
weight of her backpack in Newtons?
Weight = Mass X Acceleration due to gravity

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 .