Across
- 2. not harmful to nature
- 4. the natural world around us
- 10. making something dirty or harmful
- 12. use carefully and avoid waste
- 14. energy from natural sources that don’t run out
- 16. a storm that brings wind, rain, and destruction
- 17. use less
- 19. convert waste into reusable material
- 20. the usual weather of a place
Down
- 1. overflow of water
- 3. dangerous event caused by nature
- 5. animals living in nature
- 6. eruption explosion of lava and ash from a volcano
- 7. increase in Earth’s temperature
- 8. tropical forest with heavy rain
- 9. amount of pollution a person produces
- 11. inform people about a problem
- 13. keep something in good condition
- 15. at risk of disappearing
- 18. long period without rain