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Topic 6: Microbiology, immunity and ecosystems

Quick questions on Ecosystems and succession: energy flow, nutrient cycles and succession - Edexcel A-Level Biology B

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Explain why only about 10 per cent of energy is passed between trophic levels. [3 marks]
What is q2?
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Describe the role of pioneer species in succession. [2 marks]

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