Which three gases contribute to the greenhouse effect?
nitrogen, oxygen and water vapour
carbon dioxide, methane and water vapour
carbon dioxide, nitrogen and oxygen
carbon dioxide, oxygen and water vapour
97 exam-style questions on Edexcel GCSE Chemistry 9.2 Earth and atmospheric science, covering 9.2.1 The Earth's early atmosphere, 9.2.2 How the atmosphere evolved, 9.2.3 Chemical test for oxygen, and 9.2.4 The greenhouse effect and climate change. Each one has a worked solution and a mark scheme showing where the marks go.