Across
- 2. Carbon baring sediment is continually being deposited on the seafloor. Plate tectonics causes more denser layers to submerge in a process called subduction.
- 3. The reverse process of photosynthesis. CO2 is released back into the atmosphere.
- 6. Seafloor carbon is pushed deeper into earth and eventually melts.
- 8. Carbon is absorbed and released where the oceans surface meets the air.
- 9. Carbonic acid forms when CO2 and water react. Weak acid rain fall as precipitation. Reacts with minerals and dissolves them.
Down
- 1. Green plants use solar energy to turn atmospheric CO2 into carbohydrates.
- 4. Dissolved minerals are carried in surface water to the ocean. shells settle to the ocean floor and eventually form limestone.
- 5. Rapid chemical combination of a substance with oxygen involving the production of heat, light, and the release of CO2.
- 7. Carbon enters the soil as dead plant and animal matter. It is broken down by decay and CO2 is released back into the atmosphere.