Across
- 3. The smallest planet in our solar system (4)
- 5. The action of cleaning up trash from the environment (7)
- 6. A natural source of light in the sky (3)
- 7. A gentle, slow-moving mammal (5)
- 9. A fragrant flower often associated with love (4)
Down
- 1. The action of saving energy (6)
- 2. A man-made container for waste disposal (3)
- 4. Animals with scales (6)
- 5. The Earth's outer layer (5)
- 8. The liquid inside a lake (4)