Across
- 5. Gases and microplastics that contaminate the Earth
- 6. What our ecological footprints demand on
- 8. The Earth's solid part
- 9. Loss of biodiversity
- 10. National parks
Down
- 1. Mix of gases that surround the Earth
- 2. All living things on Earth
- 3. An educated guess
- 4. Harmful plastics that break down in water
- 7. The first step in the scientific method