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Biology · May / June 2020 · Paper 11 · Question 28

5090Energy flow

The flow of energy in ecosystems is non-cyclical. What is the main reason for this?

  1. AEnergy can be transferred back to its original source.
  2. BEnergy is not transferred from living things to their environment.
  3. CEnergy is only transferred from smaller to larger organisms.
  4. DEnergy is transferred from living organisms as heat.

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Correct answer: D. Energy is transferred from living organisms as heat.

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