choice board

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Across
  1. 2. a set of interacting parts forming a complex whole
  2. 7. a long narrow grove that forms where water ,lava or another liquid flows
  3. 8. to notice how two or more things are alike or different
  4. 9. mixture of gases surrounding a planet
  5. 10. having the conditions necessary to support life
Down
  1. 1. is all the liquid water and ice on a planet
  2. 3. a feature that forms on the surface of a planet such as a mountain channel or sand dune
  3. 4. is the solid part of a rocky planet
  4. 5. argument a claim supported by a claim
  5. 6. the process of making clear how your evidence supports your claim