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Question

Which one of the following is the correct sequence of a food chain?
(a) Diatoms-Crustaceans-Herrings
(b) Crustaceans-Diatoms-Herrings
(c) Diatoms-Herrings-Crustaceans
(d) Crustaceans-Herrings-Diatoms

Answer:

A

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Explanation:

In this sequence, diatoms serve as the primary producers, crustaceans (such as crabs, lobsters, crayfish, shrimp) consume the diatoms as primary consumers, and herrings feed on the crustaceans as secondary consumers.

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