When the energy flow through an ecosystem is measured at each trophic level,__________ of the available energy passes from one level to the next.
A)1% to 2%
B)5% to 20%
C)25% to 35%
D)36% to 45%
E)46% to 55%

Question

Quizplus · Accepted Answer

The energy flow through an ecosystem is usually around 10% efficient, meaning that only 10% of the energy from one trophic level is transferred to the next. This translates to 5% to 20% of the available energy passing from one level to the next, making B the best choice. A is not correct because the energy transfer is not that low. C, D, and E are not correct because the energy transfer is not that high.

When the Energy Flow Through an Ecosystem Is Measured at Each