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THE OXYGEN-CARBON DIOXIDE CYCLE. PowerPoint Presentation
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THE OXYGEN-CARBON DIOXIDE CYCLE.

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THE OXYGEN-CARBON DIOXIDE CYCLE. - PowerPoint PPT Presentation

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THE OXYGEN-CARBON DIOXIDE CYCLE.

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  1. THE OXYGEN-CARBON DIOXIDE CYCLE.

  2. Oxygen-Carbon Dioxide Cycle • Both are GASSES important to all living things. • Unlike water which always stays water, oxygen (O2) and carbon dioxide (CO2) convert back and forth as they cycle on the planet.

  3. ANIMAL CONTRIBUTION • During respiration (breathing), animals inhale oxygen (O2) and convert it to carbon dioxide (CO2).

  4. PLANT CONTRIBUTION • During photosynthesis (the process where plants make food for themselves) plants breathe in carbon dioxide (CO2) and exhale oxygen (O2).

  5. DECOMPOSERS • Dead organic material contains carbon dioxide (CO2), so as decomposers break down the tissue, carbon dioxide is released into the atmosphere.

  6. FOSSIL FUELS • Oil, Gas, Coal are examples. When these fuels are burned, they release carbon dioxide (CO2) and water (H2O) into the atmosphere.