Question

Write the percentage of energy transferred from autotrophs to the next level in a food chain.

What percentage of energy available at the producer level is transferred at successive trophic levels in a food chain?

Answer 1

On average, only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next. This is known as "10 percent rule" and it limits the number of trophic levels an ecosystem can support.