Carbon Cycle Crossword

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Across
  1. 3. is a major _ sink in the carbon cycle. (4 letters)
  2. 5. for fossil fuels formed from ancient organic matter. (5 letters)
  3. 6. released during respiration and combustion. (7 letters)
  4. 7. Dioxide
Down
  1. 1. where carbon dioxide is absorbed by plants. (11 letters)
  2. 2. of the carbon cycle involving the breakdown of organic matter. (6 letters)
  3. 4. by which plants use sunlight to synthesize foods with the help of carbon dioxide. (7 letters)
  4. 8. process that moves carbon among the atmosphere, land, and oceans. (5 letters)