Across
- 2. an increase in the average temperature of the earth's atmosphere
- 5. annoying and potentially harmful environmental noise
- 9. warming that results when solar radiation is trapped by the atmosphere
- 11. that can be renewed or extended
- 12. undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
Down
- 1. annoying and potentially harmful environmental noise
- 3. pollution of the atmosphere
- 4. pollution of the water in rivers and lakes
- 6. the 3rd planet from the sun
- 7. a gas that contributes to the greenhouse effect by absorbing infrared radiation
- 8. cause to repeat a cycle
- 10. the totality of surrounding conditions