Question

1. when energy is transferred between trophic levels, the amount of available energy lost is about

90 percent.
50 percent.
25 percent.
10 percent.

Explanation:

According to the 10% rule in ecology, when energy is transferred between trophic levels, about 90% of the energy is lost. This is because organisms use energy for metabolism, movement, and other life - sustaining processes, and only about 10% of the energy is passed on to the next trophic level.

Answer:

90 percent