Across
- 2. Melting of glaciers due to an increase in Earth's temperature.
- 4. The layer of gases that surrounds the planet.
- 6. A gas responsible for the greenhouse effect.
- 7. A large area of trees and plants that absorbs carbon dioxide.
- 8. The practice of using materials again to avoid waste.
Down
- 1. Natural disaster caused by the sudden release of energy in Earth's crust.
- 3. The process where plants convert sunlight into energy.
- 5. A major source of renewable energy from the sun.