Question

In the following ecosystem if 550kj of energy are stored in the secondary consumer. Kj of energy would enter the ecosystem in the producers

Answer 1

Since the percentage of energy transferred from one trophic level to the next is (approximately) 10%, only the 1% of the energy in the producers level is received by secondary consumers. Therefore, in this case, the energy that enters the ecosystem in the producers must be arround 55,000 kj (100 times 550 kj).