Mars project vocabulary

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Across
  1. 2. the special activity or purpose
  2. 4. very large and disperse eukaryotic organisms
  3. 5. a branch in mathematics that deals with shapes
  4. 6. usable power
Down
  1. 1. a mass of gasses that surrounds a planet or star
  2. 2. something that is built for a specific purpose
  3. 3. the length of a straight line through the center of an object