Across
- 2. a set of interacting parts
- 3. planet closest to sun
- 7. all the air in the Earth
- 8. anything alive on earth
- 9. an object or diagram
- 12. to connect a claim
- 13. to support a claim
Down
- 1. something that changes the landscape
- 4. a long grove that had water
- 5. to notice how things are similar
- 6. any rock or landform
- 7. a claim supported by evidence
- 10. all the water on earth
- 11. something that shapes the earth