Science crossword

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Across
  1. 3. Emission of energy in the form of waves
  2. 4. Where we live, the bottom layer
  3. 7. CO2
  4. 10. Protects Earth by absorbing radiation
Down
  1. 1. Contains all forms of life on earth
  2. 2. Where meteorite burn up
  3. 5. 21% of the atmosphere
  4. 6. 78% of the atmosphere
  5. 8. Having a strong effect on something/someone
  6. 9. Where aurora happens