Table 1 shows the average global concentration of carbon dioxide (CO2\text{CO}_2CO2) in the Earth's atmosphere measured in 1990 and 2020.
| Year | Average global concentration of carbon dioxide / ppm |
|---|---|
| 1990 | 354 |
| 2020 | 414 |
Give one human activity that has caused this increase in the concentration of carbon dioxide.
Practise Edexcel GCSE Chemistry Earth and atmospheric science with exam-style questions for Foundation and Higher tier. 62 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
