Cycling of Carbon Through Earth's Spheres

Carbon Release Processes

• Carbon is returned to the atmosphere through processes such as respiration and combustion.
• Decomposition of organic matter also releases carbon dioxide as microorganisms break down dead materials.

Volcanic Eruptions and Carbon Cycle

• Volcanic eruptions introduce substantial amounts of carbon dioxide into the atmosphere.
• This process can significantly enhance the greenhouse effect, contributing to climate change.

Cellular Respiration's Role

• Cellular respiration converts glucose into energy, releasing carbon dioxide as a byproduct.
• This is a crucial component of the carbon cycle, as it helps maintain the balance between atmospheric carbon levels and biological processes.

Carbon Dioxide in the Hydrosphere

• Carbon dioxide dissolved in ocean water is utilized by marine organisms for photosynthesis.
• The hydrosphere acts as a reservoir for carbon, influencing both aquatic life and global carbon dynamics.

Ocean and Carbon Dioxide Contribution

• Oceanic carbon dioxide levels are significantly impacted by factors such as temperature and biological activity.
• Increased respiration and decomposition in the ocean contribute to higher levels of carbon dioxide.

Burning Fossil Fuels Effects

• The combustion of fossil fuels releases large quantities of carbon dioxide into the atmosphere.
• This process accelerates the carbon cycle, leading to increased greenhouse gas concentrations and climate change implications.