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The questions in this quiz are suitable for GCSE biology students studying communities, biotic and abiotic factors affecting the abundance & distribution of organisms, competition in plants, competition in animals, adaptations to the environment in plants and animals, and extremophiles.

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 adaptations, interdependence and competition 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: