An organism incapable of producing its own energy, and so must gain this energy from other organisms.
Active transport
requires energy. This is because it is going against the natural process of diffusion. Substances diffuse when their net movement is down the concentration gradient (from higher concentration to lower). Active transport is movement from lower concentration to higher. Cytosis (phagocytosis , pinocytosis) also requires energy.
Answer:
B. some individuals are better adapted to exist in their enviornment than others are
Explanation:
