Across
- 2. all the waters on the earth's surface
- 4. fog or haze intensified by smoke or other atmospheric pollutants
- 6. refuge or safety from pursuit, persecution, or other danger
- 7. forest clearance is the removal of a forest
Down
- 1. prevention of wasteful use of a resource
- 3. the presence in or introduction into the environment of a substance which has harmful or poisonous effects
- 5. capable of being renewed
