The diagram shows an energy pyramid.

If the plankton contain 100,000 kcal of energy, about how much energy will the manta ray obtain from eating the starfish?

10 kcal
100 kcal
1,000 kcal
10,000 kcal

1 answer

100 kcal

Explanation: In an energy pyramid, energy is transferred between trophic levels with only about 10% of the energy being transferred from one level to the next. In this case, if the plankton contain 100,000 kcal of energy, the starfish would obtain about 10,000 kcal of energy from eating the plankton. Therefore, the manta ray would obtain about 1,000 kcal of energy by eating the starfish.