Across
- 3. The warming of Earth from trapped heat by atmospheric gases.
- 4. Long-term changes in temperature and weather patterns.
- 7. Rain that contains large amounts of harmful chemicals.
- 8. The cutting down of trees in a large area.
Down
- 1. The gradual increase in Earth's average temperature.
- 2. Species at risk of extinction due to environmental threats.
- 5. Contamination of water bodies by harmful substances.
- 6. Contamination of the atmosphere by harmful substances.