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(a) Explain why, a food chain usually ca...

(a) Explain why, a food chain usually cannot have more than three of four steps.
(b) Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun :
Small algae `to` Zooplankton `to` Fish `to` Big fish

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The correct Answer is:
(b) 0.1 J
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