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  2. Atmospheric carbon cycle - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_carbon_cycle

    Of the increased amounts of carbon dioxide that are introduced to the atmosphere each year, approximately 80% are from the combustion of fossil fuels and cement production. The other ~20% originate from land use change and deforestation. [18] Because gaseous carbon dioxide does not react quickly with other chemicals, the main processes that ...

  3. Carbon cycle - Wikipedia

    en.wikipedia.org/wiki/Carbon_cycle

    Carbon dioxide is removed from the atmosphere primarily through photosynthesis and enters the terrestrial and oceanic biospheres. Carbon dioxide also dissolves directly from the atmosphere into bodies of water (ocean, lakes, etc.), as well as dissolving in precipitation as raindrops fall through the atmosphere. When dissolved in water, carbon ...

  4. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    Carbon is used to make carbohydrates, fats, and proteins, the major sources of food energy. These compounds are oxidized to release carbon dioxide, which can be captured by plants to make organic compounds. The chemical reaction is powered by the light energy of sunshine.

  5. Crassulacean acid metabolism - Wikipedia

    en.wikipedia.org/wiki/Crassulacean_acid_metabolism

    The pineapple is an example of a CAM plant.. Crassulacean acid metabolism, also known as CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions [1] that allows a plant to photosynthesize during the day, but only exchange gases at night.

  6. Respiration (physiology) - Wikipedia

    en.wikipedia.org/wiki/Respiration_(physiology)

    Although physiologic respiration is necessary to sustain cellular respiration and thus life in animals, the processes are distinct: cellular respiration takes place in individual cells of the organism, while physiologic respiration concerns the diffusion and transport of metabolites between the organism and the external environment.

  7. Inside Katie Holmes' Ultra-Private Dating Life, From Chris ...

    www.aol.com/inside-katie-holmes-ultra-private...

    Why did Katie Holmes split from Jamie Foxx? Holmes and Foxx never gave an official reason for ending their relationship, but Us Weekly reported that lifestyle differences were a big part of the ...

  8. Terrestrial biological carbon cycle - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_biological...

    Most carbon leaves the terrestrial biosphere through respiration. When oxygen is present, aerobic respiration occurs, producing carbon dioxide. If oxygen is not present, e.g. as is the case in marshes or in animals' digestive tracts, anaerobic respiration can occur, which produces methane. About half of the gross primary production is respired ...

  9. Millions Of People Take Biotin For Hair Growth, And ... - AOL

    www.aol.com/lifestyle/millions-people-biotin...

    Everything To Know About Biotin For Hair Growth Stefania Pelfini, La Waziya Photography - Getty Images "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links."