A-Level Biology Specification

Edexcel B 9BI0

Section 10.2: Energy transfer through ecosystems

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#10.2i

Understand how energy is transferred between trophic levels using the terms ‘net primary productivity’ and ‘gross primary productivity’.

#10.2ii

Be able to calculate the efficiency of energy transfer between different trophic levels and account for the loss of energy at each level.

#10.2iii

Understand the significance of microorganisms in the recycling of nutrients within an ecosystem.