How did increasing the snakes affect the grass

By increasing the population of the snakes, the size of the grass also increased because there were less rabbits, meaning that the snakes and hawks were eating more of the rabbits. With less rabbits less of the grass got eaten.

sorry, but you do not have posted the diagram.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.