Across
- 2. increase in water temperature
- 3. managing things entrusted to us
- 4. a renewable source from the sun
- 6. natural filters
- 7. we breathe it
- 9. rocks removed from the ground
- 12. two primary atmospheric gases
- 13. two primary atmospheric gases
Down
- 1. can not renew
- 3. reduce erosion by 75%.
- 5. planting different crops to prevent erosion
- 8. solid waste leftovers
- 10. when hydrocarbons and nitrogen oxides react
- 11. harmful substance in the air