Question

why do higher trophic levels in most ecosystems contain fewer organisms than lower trophic levels? a. energy available for use to the highest trophic level is small b. energy available for use to the lowest trophic level is small. c. energy available for use to the highest trophic level is large. d. energy available for use to the highest and lowest trophic levels is the same.

Explanation:

In ecosystems, energy transfer between trophic levels is inefficient. Only about 10 - 20% of energy is passed on from one level to the next. So, higher trophic levels have less energy available, which can support fewer organisms.

Answer:

A. Energy available for use to the highest trophic level is small