Across
- 2. dangerous gas or smoke produced by cars or other means of transport
- 3. a container in which you throw waste
- 6. things or material you don't use anymore and throw away
- 8. at risk of extinction (e.g. ~ species)
- 9. a type of fuel used by cars and other means of transport. It comes from petroleum
Down
- 1. natural process that warms the Earth's surface. It's caused by emissions of gases like carbon dioxide
- 4. waste that you throw on the floor
- 5. a substance used to provide heat or power, usually by being burned
- 7. a building where goods are made using machines