# A government report states that global climate change is likely to have several serious effects on the planet. Describe two possible effects of global climate change on the Earth.

> AQA GCSE Chemistry (8462) — 4.9.2 Carbon dioxide and methane as greenhouse gases · Describe · 4 marks

> Scientists have gathered peer-reviewed evidence suggesting that increasing levels of greenhouse gases are leading to global climate change.

## Mark scheme (4 marks)

1. Sea levels rise (due to melting of polar ice caps)
2. Credit for development of sea level rise point OR a second distinct effect — extinction of species
3. Decrease in crop yield (for major world crops)
4. Credit for development of crop yield point OR a further distinct effect — migration of people from areas affected by drought or flooding

## Key terms

- [global climate change](https://www.gradenine.co.uk/glossary/global-climate-change)

## Related

- [Revision notes for AQA GCSE Chemistry (8462)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

---
Source: [GradeNine](https://www.gradenine.co.uk/q/a-government-report-states-that-global-467318ee) · Published by Druglandscape Ltd.