Geology on Mars

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Across
  1. 1. a set of interacting parts forming a complex whole
  2. 3. an event or series of events that causes changes in the geosphere, such as flowing water or flowing lava
  3. 5. having the conditions necessary to support life
  4. 9. all the liquid water and solid water (ice) on a planet
  5. 10. a long, narrow groove that forms where water, lava, or other liquid flows
Down
  1. 2. a claim supported by evidence
  2. 4. a feature that forms on the surface of a planet, such as a mountain, channel, or sand dune
  3. 6. the mixture of gases surrounding a planet
  4. 7. all the living things on a planet
  5. 8. the solid part of a rocky planet