Question

What percentage of a lower trophic level’s energy flows to the next higher trophic level?
a.
1%
b.
10%
c.
50%
d.
100%

Answer 1

The correct answer is **b. 10%**. This is known as the "10% rule" in ecology, which states that only about 10% of the energy from one trophic level is passed on to the next level. The rest is lost as heat and used for metabolic processes.