Across
- 2. (n)Preservation and protection of energy, resources, or ecosystems.
- 5. (n) The act of using or buying something
- 6. (v)To remove pollution.
- 7. (n)The dissapearance of species.
- 8. (a)Not exhausting natural resources or damaging the environment.
- 11. (a)Hazardous for human, animal or plant health.
- 14. (n)Damage to the soil.
- 15. (v)To allow a substance to flow.
- 16. (a)Resources that nature replaces.
- 18. (v)To control with laws.
- 19. (n)The shift from agriculture to mechanized manufacturing.
Down
- 1. (n)the action of releasing something, usually a gas.
- 3. (v)To throw something away.
- 4. (n)The act of growing and taking care of crops.
- 9. (n)The gases around the Earth.
- 10. (n)dangerous gases with a strong odor
- 12. (a)Causing great damage or suffering.
- 13. Required legally.
- 16. (n)Something useful such as gas, water or minerals.
- 17. (adv)Existing as part of nature.