Across
- 5. Non-living parts
- 6. A group of populations living in the same area
- 7. Water component of the Earth
- 10. Organisms that can breed to produce offspring
- 11. Layer of gases that surround the Earth
- 12. All living and non-living parts of an environment
Down
- 1. A group of the same species that live in the same area
- 2. Living or once living
- 3. Zone on Earth that supports life
- 4. Rocky outer shell of the Earth
- 8. The environment that an organism lives in
- 9. The study of living things and their environment