Across
- 3. very large area of salt water
- 4. rain, sun, wind, and temperature outside
- 7. everything in the natural world
- 9. dirty air, water, or land
- 10. something that grows in the ground
- 11. use materials again
- 13. animals living naturally
Down
- 1. large area with many trees
- 2. something that can hurt people or nature
- 5. the planet we live on
- 6. a living creature like a dog or bird
- 8. power used for heat, light, and machines
- 9. to keep something safe
- 11. long natural water that flows to the sea
- 12. weather patterns over time