The process of energy capture by plants is called primary productivity .
Energy captured by the primary producers is transferred to other organisms.
Plants are eaten by animals. These animals are eaten by other animals, and so on. While energy is wasted as one moves from one trophic level to the next, toxins are accumulated. Accumulation of toxins is known as biological magnification . Nutrient Flow Carbon cycles from organism to organism Carbon dioxide gas is produced by animals and used by plants.