Question

Which statement expresses the general pattern of energy across trophic levels?

Options

• Energy is present only at the tertiary consumer level.

• Energy at a higher trophic level is always more than at a lower trophic level.

• Energy at a lower trophic level is always more than at a higher trophic level.

• Energy is equal at all trophic levels.

Answer 1

Energy declines at each transfer because only 10% passes onward as net energy. Thus, a lower trophic level always contains more energy than a higher level.