Across
- 7. Animals that sleep during winter season
- 8. Gradual change in organisms over time
- 9. Sequence showing who eats whom
- 12. Group of similar living organisms
- 13. Animals that eat only plants
- 14. Animals that are active during night
- 15. Part of Earth where life exists
Down
- 1. Process by which plants make their food
- 2. Natural place where plants and animals live
- 3. Animals that eat both plants and animals
- 4. Variety of different living organisms on Earth
- 5. Organisms that produce their own food
- 6. Forests where trees lose leaves in winter
- 10. Protection and preservation of nature
- 11. Cutting down trees on a large scale