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4 marksNutrient Cycles and Energy Flow

CAPE Environmental Science Unit 1 · 2004 · Paper 2 · Question 3(a)

Give four reasons why, in an ecosystem, a food web is generally more useful than a food chain.

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Other parts of this question

  1. 3(b)Outline four reasons for assigning trophic levels to each organism in an ecosystem.[8 marks]
  2. 3(c)With reference to Figure 2, explain why it is more energy efficient for humans to eat at lower trophic levels.[8 marks]

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