Global Warming and the Ozone Layer Quiz
Test the carbon cycle, greenhouse gases and warming effects, plus ozone protection and CFC depletion.
You can take this as many times as you like.
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Practise
Questions are picked at random each time you start. You'll see your score, the answers and explanations at the end. It's for practice only and doesn't count towards mastery.
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Beyond the syllabus: optional enrichment that does not count towards your progress.