Across
- 1. what we breathe
- 5. Earth, Mars, Mercury
- 6. type of warming
- 7. Dodo bird is one
- 8. to not use as much
- 10. colorful plants
Down
- 1. the month with Earth Day
- 2. to use again
- 3. a type of material that isn't good for the planet
- 4. to make something into something else
- 9. our home planet