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The questions in this quiz are suitable for GCSE biology students studying levels of organisation, predators and prey, the carbon cycle, and the water cycle.

If you struggled with the quiz, don't panic - we've got you! You can revise by clicking the links below.

To brush up on your GCSE organisation of an ecosystem knowledge, click on the link to your awarding body specific revision:

Click the links below to try our GCSE biology exam-style or quick-fire quizzes and test your skills and knowledge: