Across
- 3. Living components of an ecosystem
- 6. Organisms that recycle nutrients from dead matter
- 8. Upper layer of the Earth where plants grow
- 9. Factor that affects enzyme activity in organisms
- 10. Organisms that make their own food
- 11. Non-living environmental factors
- 12. Essential liquid for life and it is needed for digestion, respiration and transport
- 13. Energy source for photosynthesis
Down
- 1. Long-term average weather conditions
- 2. A community of organisms interacting with their environment
- 4. The scientific study of organisms and their environment
- 5. Organisms that eat other organisms
- 7. Process plants use to make food using sunlight