LIFE SCIENCE

Detailed explanation-1: -As you move up the pyramid, through the trophic levels to primary, secondary and tertiary consumers, the amount of energy decreases and the levels become smaller. While energy can not be created or destroyed is it released as heat within each level. Approximately only 10% of energy is passed from one level to the next.

Detailed explanation-2: -The number of organisms at each level decreases relative to the level below because there is less energy available to support those organisms. The top level of an energy pyramid has the fewest organisms because it has the least amount of energy.

Detailed explanation-3: -Ecological pyramids model energy loss In most ecosystems, only about 10% of the total energy available at a given trophic level is transferred to the next level. The rest is used to power life processes, is discarded as waste, or is simply not consumed.