Across
- 1. discarded matter
- 3. the weather condition we live in
- 7. not used
- 9. use again
- 10. we take care of them and water them
- 12. the layer on earth that protects use from the radition
- 13. use again or more than once
- 14. trash in a public place
- 15. envelope of gases surrounding earth
Down
- 2. panel absorb the sun's rays as a source of energy
- 4. natural world as a whole
- 5. all organisms that grow or live wild in an area without being introduced by humans
- 6. the star around which the earth orbits
- 8. biological community of interacting organisms
- 11. the month earth day is
- 12. what the earth is mostly made of
- 14. a place to dispose of refuse and other waste material