Question

using the 10% rule when studying trophic pyramids, if the autotrophs produce 20,000 joules of energy, how much energy is passed on to the herbivores? 0.2 joules 200 joules 2,000 joules

Explanation:

Step1: Identify the energy - transfer rule

The 10% rule means 10% of energy is passed from one trophic level to the next.

Step2: Calculate energy passed to herbivores

The energy of autotrophs is 20000 Joules. Energy passed to herbivores = 20000×0.1 = 2000 Joules

Answer:

2000 Joules