Terrestrial planets

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Across
  1. 3. Earth is made up of _____,CO2, and nitrogen.
  2. 6. Which planet takes 365.3 days in revolution?
  3. 7. Mars has ____ minerals.
  4. 9. Which planet has a long iron core?
  5. 10. Which planet is a red, rocky planet?
Down
  1. 1. Which planet shrinks?
  2. 2. Mars has______ ice caps.
  3. 4. Venus is the ____ planet.
  4. 5. Which planet has highlands and plains?
  5. 8. Venus has ____ rain.