4 marksEnergy Flow and Nutrient Cycling

CAPE Biology Unit 2 · 2014 · Paper 2 · Question 4(a)

Give an analysis of potential energy losses across trophic levels in a food chain.

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4(b)Comment on the importance of food web complexity in an ecosystem. In your answer, explain what is meant by a food web.[4 marks]
4(c)Describe SIX biotic interactions that can occur in an ecosystem. Include a brief explanation of the term 'biotic interaction'.[7 marks]

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