Mel1312
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#1
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#1
Hiya,

So I'm currently revising Energy and Ecosystems but in particular looking at the Pyramids of energy, biomass and numbers.

A question asking for a calculation to work out the percentage efficiency of pyramids of energy (Question 2b) in the paper

Question: http://filestore.aqa.org.uk/subjects...4-QP-JAN12.PDF

Mark Scheme: http://filestore.aqa.org.uk/subjects...W-MS-JAN12.PDF

Workings out and any equations which can be used would be greatly appreciated

M
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#2
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Hi there,

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