Across
- 3. A biome that mostly has grasses
- 6. Scientific study of how organisms function in the environment
- 7. The living things of the world
- 8. One organism
- 9. All organisms of one species in an area
- 11. All of the living and nonliving things in the environment
- 12. The total of all living and nonliving things in nature
Down
- 1. All living things in an area or groups of populations
- 2. Every organism relies on other living and nonliving things to survive
- 4. Large area that has a specific climate and plants and animals
- 5. Greek for "house"
- 10. Many different kinds of organisms and the ecosystems where they live