C14 carbon dating interracial dating debate
has been estimated to be roughly 12 to 16 years in the northern hemisphere.
The transfer between the ocean shallow layer and the large reservoir of bicarbonates in the ocean depths occurs at a limited rate.--or rather, its relative absence—is therefore used to determine the relative contribution (or mixing ratio) of fossil fuel oxidation to the total carbon dioxide in a given region of the Earth's atmosphere.
The gas mixes rapidly and becomes evenly distributed throughout the atmosphere (the mixing timescale in the order of weeks).
Carbon dioxide also dissolves in water and thus permeates the oceans, but at a slower rate.
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The different isotopes of carbon do not differ appreciably in their chemical properties.