The table below displays the estimated percentage contribution of four major greenhouse gases to the total anthropogenic radiative forcing in 1980 compared to today.
| Greenhouse Gas | Percentage contribution in 1980 (%) | Percentage contribution today (%) |
|---|---|---|
| Carbon dioxide (CO2CO_2CO2) | 53 | 65 |
| Methane (CH4CH_4CH4) | 22 | 16 |
| Halocarbons | 18 | 7 |
| Nitrous oxide (N2ON_2ON2O) | 7 | 12 |
Which greenhouse gas has changed by the largest number of percentage points from 1980 to today?
Carbon dioxide
Halocarbons
Nitrous oxide
Methane
32 exam-style questions on OCR GCSE Chemistry Interpreting and interacting with earth systems. Each one has a worked solution and a mark scheme showing where the marks go.