Which of the followimg could be reasoms shy popultion sizes may reach and maintaim plateaus? choose the three that apply Will mark as brilliant answer

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.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate