Across
- 2. the type of weather
- 7. a planet that has life in it
- 8. a type of gas that is bad for the living
- 9. things that are usually paper or cardboard
- 10. a living space
Down
- 1. to use the resources of something
- 3. a type of mechanics using
- 4. the reason why polar bear populations are going down
- 5. to use something again
- 6. to save something