Question

What will be the amount of energy available to the organisms of the 2nd trophic level of a food chain, if the energy available at the first trophic level is 10,000 joules?

Answer 1

On applying the 10% law to the food chain, the organisms of the 2nd trophic level of the food chain
will have 10/100 * 10000= 1,000 joules of energy.