The Carbon Cycle

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Across
  1. 2. having to do with the ocean
  2. 5. breathing
  3. 6. large body of salt water that covers the Earth
  4. 8. living or once-living thing.
  5. 9. plant process that uses light energy
  6. 10. processes in which carbon (C) atoms circulate
Down
  1. 1. remnant impression or trace of an ancient organism
  2. 3. large, concentrated supply or reserve
  3. 4. forms the basis of all known life (symbol C)
  4. 7. layers of gases surrounding a planet