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9.2 Earth and atmospheric science

9.2 Earth and atmospheric science

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Question 37

Table 1 shows the average global concentration of carbon dioxide (CO2\text{CO}_2CO2​) in the Earth's atmosphere measured in 1990 and 2020.

YearAverage global concentration of carbon dioxide / ppm
1990354
2020414

Give one human activity that has caused this increase in the concentration of carbon dioxide.

[1]
Markscheme

9.2 Earth and atmospheric science Questions

  1. GCSE
  2. /Chemistry
  3. /9.2 Earth and atmospheric science

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.

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