Sydney's Crossword L4

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Across
  1. 5. the place where meteors burn up
  2. 6. lowest place on earth
  3. 7. gasses around the planets
  4. 9. 2nd lowest place in space
  5. 10. something we walk on
Down
  1. 1. the same thing
  2. 2. water ,land ,and lots of things that live
  3. 3. the place where the gasses combine with the suns energy
  4. 4. a thing that changes
  5. 8. water