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Ocr A Level biology

Any people doing ocr a level biology or have done it in the past, any tips for revising for paper 3?
They love using respiration, enzymes/inhibitors and evaluate in every paper.
I identify the keywords and write down the topics from the question and then waffle (3-5 markers).
In terms of evaluate, talk about the sample size, time of day and type of species. You can test your knowledge with these questions:

"Explain how sustainable timber production can impact the interrelationship between photosynthesis and respiration in a forest ecosystem (6)”

"Explain how the structure of mammalian muscles and role of ATP influence the predator and prey populations in an ecosystem (6)".

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