Across
- 5. made up of all the living things on Earth
- 7. an organism that only eats plants
- 8. an organism that needs to consumer other organisms
- 10. the gas that make ups 70% of the atmosphere
Down
- 1. the gas that plants use for photosynthesis
- 2. contains all the water on the planet
- 3. the layer of gases that surrounds the planet
- 4. the rocks, soil, and crust
- 6. an organism that makes its own energy from the sun
- 9. the gas that we require to breath