Across
- 5. all the living things on earth
- 6. gasses surrounding the earth
- 9. subject you're solving now
- 10. make up our skeleton
- 11. many substances mixed together
Down
- 1. all the rocks on earth
- 2. all the water on earth
- 3. found in the outer space
- 4. flying mammal
- 7. control our movement
- 8. our home planet
- 10. process the information