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9.1 The composition and evolution of the Earth's atmosphere

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Question 12
F

Sedimentary rocks and fossil fuels both decreased the percentage of carbon dioxide in the atmosphere. What do sedimentary rocks and fossil fuels have in common?

[1]
A

Both were formed by the precipitation of carbonates

B

Both were formed from the remains of marine animals

C

Both give out carbon dioxide as they are being formed

D

Both contain carbon that was once in the atmosphere

Markscheme

9.1 The composition and evolution of the Earth's atmosphere Questions

  1. GCSE
  2. /Chemistry
  3. /9.1 The composition and evolution of the Earth's atmosphere

40 exam-style questions on AQA GCSE Chemistry 9.1 The composition and evolution of the Earth's atmosphere, covering 9.1.1 The proportions of different gases in the atmosphere, 9.1.2 The Earth's early atmosphere, 9.1.3 How oxygen increased, and 9.1.4 How carbon dioxide decreased. Each one has a worked solution and a mark scheme showing where the marks go.

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