In a food chain, producers hold 10 000 kJ. Using the 10 percent rule, how much energy reaches tertiary consumers?

Answer and explanation

Correct answer: A. 10 kJ, passed through primary and secondary consumers

  1. Step 1: Producers to primary consumers: 1000 kJ; to secondary: 100 kJ. Step 2. Secondary to tertiary: 10 kJ. Answer: 10 kJ. Why not the others: the others use the wrong number of transfers.

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