700x700px |Boron cycles through the atmosphere, lithosphere, biosphere, and hydrosphere. The major flux between reservoirs are depicted with arrows, where the size/width of the arrow corresponds to the magnitude of the flux. All flux values are given in Tg B/yr (= 1012 gB/yr). Red arrows indicate anthropogenic emissions, while the black arrows indicate natural emissions. The dominant fluxes of B occur from anthropogenic and marine sources, where the total anthropogenic flux (2.3 Tg B/yr) is more than half of the total B input to the ocean (4.2 Tg B/yr).. The boron cycle has been significantly impacted by human activity. Major anthropogenic fluxes are coal mining and combustion, oil production, emissions from industrial factories, biofuels, landfills, and mining and processing of boron ores.. Anthropogenic boron fluxes to the hydrosphere and atmosphere have increased and anthropogenic fluxes now exceed the natural boron fluxes 
400x400px |Boron cycles through the atmosphere, lithosphere, biosphere, and hydrosphere. The major flux between reservoirs are depicted with arrows, where the size/width of the arrow corresponds to the magnitude of the flux. All flux values are given in Tg B/yr (= 1012 gB/yr). Red arrows indicate anthropogenic emissions, while the black arrows indicate natural emissions. The boron cycle has been significantly impacted by human activity. Major anthropogenic fluxes are coal mining and combustion, oil production, emissions from industrial factories, biofuels, landfills, and mining and processing of boron ores.. Anthropogenic boron fluxes to the hydrosphere and atmosphere have increased and anthropogenic fluxes now exceed the natural boron fluxes Notes
R
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D
The dominant fluxes of B occur from anthropogenic and marine sources, where the total anthropogenic flux (2.3 Tg B/yr) is more than half of the total B input to the ocean (4.2 Tg B/yr)..
A
Notes