Across
- 2. no trash is thrown away
- 7. using too much
- 8. change from solid to liquid
- 10. put in danger
- 11. break or harm something
- 14. good for the environment (adj)
- 16. make air, water, or land dirty
- 19. make old things new again
- 20. energy from nature that never runs out
Down
- 1. big changes in the world’s weather
- 3. things you throw away
- 4. can continue without harming nature (adj)
- 5. a big uncontrolled fire in nature
- 6. collects energy from the sun
- 9. use badly or unnecessarily
- 12. the Earth is getting hotter
- 13. a long time with no rain
- 15. grown without chemicals
- 17. try to solve a problem
- 18. too much water in an area