Across
- 2. the earth and all the people and things on it
- 4. Anything that makes the earth dirty and unhealthy
- 7. What the sky and the air outside are like
- 8. To be or set on fire
- 9. The ability to do work
Down
- 1. Warming describes the rising of the average temperature on Earth
- 3. Transport that runs automatically through a machine
- 5. synonym people
- 6. materials and objects that people have thrown away
- 7. The liquid that makes life on Earth possible