A Bluefin tuna eats a sardine that has recently been feeding on plankton. The sardine has 1,000 joules worth of energy, but the tuna ultimately gains only about 100 joules. Where does the rest of the energy go?

A. It is destroyed and cannot be recovered.

B. It is used for cell functions or transformed to heat energy.

C. It was used by the sardine as it tried to get away from the tuna.

D. It reverts back to the plankton that the sardine ate.

Question

24 June, 01:33

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Greta Good · Answer 1

The answer is B.

There is a general rule that only around 10% of the energy in an organism is transferred to the next trophic level.