Question

2. If the plankton in the example above makes 15,000 calories

Answer 1

Energy available to krill is 1500 calories

Explanation:

Energy produced by phytoplankton = 15,000 calories

Energy available to krill = ?

Along the food chain, only 10% of energy is transferred to the organism of higher trophic level.

Thus,

energy available to krill = $\frac{10}{100} X 15,000$

                                       = 1500 calories

Energy available to small fish = $\frac{10}{100} X 15,00$

                                                 = 150 calories

Energy available to medium fish = $\frac{10}{100} X 150$

                                                      = 15 calories

Energy available to large fish = $\frac{10}{100} X 15$

                                                 = 1.5 calories