Across
- 3. having the conditions necessary to support life
- 8. all the liquid water and solid water (ice) on a planet
- 9. Mr. Scott's favorite Pokémon
- 10. the mixture of gases surrounding a planet
Down
- 1. we would have evidence Mars could have been habitable in the past if the channel was made by (2 words, no space between them)
- 2. a feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
- 4. all the living things on a planet
- 5. a set of interacting parts forming a complex whole
- 6. the solid part of a rocky planet
- 7. a long, narrow groove that forms where water, lava, or other liquid flows