Which of the following is the best explanation of
the available energy at each of the trophic levels
in this ecosystem?
A. The amount of available energy is equal at all
trophic levels because all organisms require
energy.
B. Third-level consumers have the greatest
amount of available energy because they
require energy to fly and hunt for prey.
C. Producers have the greatest amount of available
energy because they absorb heat from the sun.
D. The amount of available energy decreases at
each trophic level because energy is lost as
heat and used for life processes.