Calculate the efficiency of biomass transfer between trophic levels using fractions of mass.

Calculate the efficiency of biomass transfer between trophic levels using fractions of mass.. Within Trophic levels in an ecosystem (biology only), this learning objective sits inside Transfer of biomass for AQA Biology 8461. Focus on using ideas such as biomass transfer, efficiency, fraction, trophic level accurately in your explanation. A strong response should define the core idea, describe the relevant biological process, and connect it back to the question wording instead of giving a vague definition. When revising, students should aim to explain the science clearly, include precise biological vocabulary, and show how the process or structure links to the wider topic rather than listing isolated facts.