Geology on Mars

2. to notice how two or more things are alike or diferent
6. the solid part of a rocky planet
9. a set of interacting parts forming a complex whole
10. a long narrow groove that forms where water,lava,or other liquids form
12. a proposed answer to a question about the natural world
15. having the conditions necessary to support life habitable
16. an object or diagram or computar program that helps us understand something by making it simpler

1. all the liquid water and solid water
3. information about the natural world that is used to support or go against a claim
4. the process of making clear how your evidence supports your claim
5. argument a claim supported by evidence
7. the mixture of gases surrounding a planet
8. geologist a scientist who studies of planets in our solar system
11. all the living things on a planet
13. a feture on the surface of a planet such as a mountain,channel,or a sand dune
14. process an event or series of events that causes changes in the geosphere such as flowing water,or flowing lava