B4 2021 Leslie

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Across
  1. 2. things that produce oxygen
  2. 4. bottom layer of the atmosphere
  3. 5. things like gas, oil, petroleum
  4. 6. gaseous form of water
  5. 8. living organisms on earth
  6. 11. what global warming is doing to sealevel
  7. 12. the protective layer in our atmosphere
  8. 13. gas that comes from animal products
  9. 16. process that makes oxygen in plants
  10. 18. a gas found in the greenhouse layer
  11. 19. second to bottom layer of the atmosphere
Down
  1. 1. produced by the burning of Fossil Fuels
  2. 3. meteorites burn in this layer
  3. 7. hottest layer of the atmosphere
  4. 9. the most abundant gas in our atmosphere
  5. 10. gas released from agriculture
  6. 14. first gas in the universe to exist
  7. 15. all of the gas that surrounds earth
  8. 17. measure of how hot or cold something is
  9. 20. makes up 21% of the gas in atmosphere