Once people were getting paid to take care of the earth's land and animals, carbon drawdown then joined the effort to stop the mass extinction event that we had been slipping into.
一旦从爱护地球土地和动物中获得回报，碳减少就进入了人类的努力列表中，努力阻止不断逼近的大规模灭绝事件发生。
Animal carbon
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Bone char
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Bone char (Latin: carbo animalis) is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; however, it consists mainly of tricalcium phosphate (or hydroxylapatite) 57-80%, calcium carbonate 6-10% and activated carbon 7-10%. It is primarily used for filtration and decolourisation.
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