Question

using the 10% rule when studying trophic pyramids, if the producers at the first trophic level produce 1000 joules of energy, how much energy is passed on to the carnivores at the third trophic level? 25 joules 100 joules 10 joules

Explanation:

Step1: Energy transfer from first to second level

According to the 10% rule, energy passed from first (producers) to second (primary consumers) level: \(1000\times10\% = 100\) Joules.

Step2: Energy transfer from second to third level

Energy passed from second to third (carnivores at third level) level: \(100\times10\%=10\) Joules.

Answer:

10 Joules