Across
- 2. rainwater containing dissolved acids that pollute the environment
- 5. radiation from the sun that can be harmful to living organisms
- 7. keeps the planet´s temperature within acceptable limits for life
- 8. a building that holds heat for plants to grow
Down
- 1. causes chemical reactions that destroy the ozone
- 3. long-term heating of Earth´s surface
- 4. the process of creating so much damage to something that it cannot be saved
- 6. the "natural shield" against ultraviolet radiation