# A supermarket is trying to reduce its carbon footprint. Describe two human activities that increase the levels of greenhouse gases in the atmosphere and explain why reducing a carbon footprint can be difficult.

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

## Mark scheme (4 marks)

1. Names one human activity that increases carbon dioxide levels
2. Names one human activity that increases methane levels
3. States one reason why reducing a carbon footprint can be difficult — cost
4. States one reason why reducing a carbon footprint can be difficult — land use or practicality

## Key terms

- [carbon footprint](https://www.gradenine.co.uk/glossary/carbon-footprint)
- [greenhouse gases](https://www.gradenine.co.uk/glossary/greenhouse-gases)

## 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)

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Source: [GradeNine](https://www.gradenine.co.uk/q/a-supermarket-is-trying-to-reduce-6fee2a9b) · Published by Druglandscape Ltd.