CAPE Biology Unit 2 · 2012 · Paper 2 · Question 4(a)(i)
Explain what is meant by the terms 'species diversity' and 'stability' of a community.
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- 4(a)(ii)Explain why species diversity is positively correlated with ecosystem stability, referring to resistance and resilience of the communities in the ecosystem.[5 marks]
- 4(b)(i)Define the term 'food chain' in terms of energy flow.[2 marks]
- 4(b)(ii)Explain why a food web better describes energy flow in an ecosystem than does a food chain.[4 marks]
More practice: the rest of this paper · more Ecological Systems, Biodiversity and Conservations questions · all CAPE Biology Unit 2 past papers