Question

A food chain contains four trophic levels. The top-most level contains about 300 J of biomass. How much biomass (in J) do you expect to find in the bottom (i.e. primary producer) trophic level?
Group of answer choices

30,000

3,000,000

300,000

300

30

Answer 1

$\huge \underline \mathtt \colorbox{cyan}{300,000J}$

Explanation:

According to the 10% rule

Top (predators)= 300J

Omnivores(secondary)= 3,000J

Herbivores(primary)= 30,000J

Plants(producers)= 300,000J