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In this video learn how to draw pyramids of biomass to scale and how to calculate biomass efficiency between different tropic levels in a food chain. Learn why biomass is lost between tropic levels and what knowledge you need to access any exam question testing your understanding of this. Ensure exam success today with this fundamental part of the ecology topic and focus your revision on exam focused tasks and to ensure success today!
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Length: 35:23
Subject: biology
Topic: ecology
Exam Board: aqa,edexcel
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Price: £3.00
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