atmosphere

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Across
  1. 6. water cycle processes, industry waste
  2. 8. absorbs harmful UV Rays
  3. 9. the aurora borealis (northern lights) are in this layer
  4. 11. helped create our early atmosphere
  5. 12. no oxygen or life many years ago
Down
  1. 1. where the ozone layer is
  2. 2. harmful ultra violet radiation from the sun
  3. 3. the atmosphere where life forms
  4. 4. a form of energy from the sun
  5. 5. gasses that help trap heat
  6. 7. shooting stars/meteorites burn in this layer
  7. 10. 21% oxygen life can exist