Asher's crossword puzzle

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Across
  1. 2. The movement of oxygen from the atmosphere into living organisms and back to the atmosphere.
  2. 4. dead organisms are decomposed by organisms such as bacteria and fungi.
  3. 6. when nitrogen cycles through the environment
  4. 7. When water leaves the Earth, and enters the atmosphere as a gas called water vapor
  5. 10. takes oxygen from the atmosphere and releases carbon dioxide
Down
  1. 1. the movement of carbon from the atmosphere into living organisms, then into the Earth, and then back to the atmosphere again
  2. 3. fuels such as gasoline, oil, and coal contain large amounts of carbon
  3. 5. When plants and algae remove carbon dioxide from the atmosphere to make glucose and release oxygen back into the atmosphere.
  4. 8. The water in the clouds eventually returns to the Earth by falling.
  5. 9. When water vapor cools and becomes a liquid again