Across
- 2. A testable explanation
- 3. 5 millimeters to 1 nanometer plastic
- 4. Environmental change caused by humans
- 6. Noticing and studying an event
- 7. Mathematical way to describe what will happen
- 8. The process of repeating expirements
- 10. Variety of life
Down
- 1. All gas on Earth
- 5. Environmental waste
- 9. A proven explanation