Across
- 2. a term for waste that can be broken down by natural processes
- 3. a material commonly used for single-use items that harms the environment
- 4. a term for they layer of gases surrounding the earth
- 8. the largest ocean on earth
- 9. the process by which plants make their own food using sunlight
- 10. this renewable energy source comes from the sun
Down
- 1. the movement of water from the ocean to the atmosphere and back again
- 5. the name for the chemical symbol O
- 6. a planet in our solar system known for its blue appearance
- 7. the process of planting trees to restore or create a forest