Scientists modelled the effects of changes in average ocean temperature and the volume of ice on land.
All four predictions are for the same time period.
| Prediction | Increase in average ocean temperature in °C | Volume of land ice lost in m³ | Predicted rise in average sea level in m |
|---|---|---|---|
| A | 0.0 | 0.0 | 0.00 |
| B | 0.8 | 0.0 | 0.10 |
| C | 0.0 | 3.6 × 10¹³ | 0.10 |
| D | 0.8 | 3.6 × 10¹³ | 0.20 |
Use the information in the table and your knowledge to describe why prediction D gives a greater rise in average sea level than predictions B and C.
A coastal farming area has crop fields 0.12 m above the current average sea level. A freshwater storage pond is protected from the sea by a barrier 0.18 m above the current average sea level.
Use prediction D to suggest two problems that the rise in sea level could cause for the farming area.
73 exam-style questions on AQA GCSE Chemistry 9.2 Carbon dioxide and methane as greenhouse gases, covering 9.2.1 Greenhouse gases, 9.2.2 Human activities which contribute to an increase in greenhouse gases in the, 9.2.3 Global climate change, and 9.2.4 The carbon footprint and its reduction. Each one has a worked solution and a mark scheme showing where the marks go.