Answer :
About 99.9 percent of all carbon on earth is stored in the lithosphere
Approximately 99.9% of all carbon on Earth is stored in the lithosphere, within carbonate rocks like limestone and in fossil fuels such as coal.
These reservoirs hold the vast majority of Earth's carbon, with the remaining amounts circulating through oceans, soils, biomass, and the atmosphere.
The majority of this carbon is found in carbonate rocks such as limestone, which is mostly composed of calcium carbonate (CaCO3).
These carbonate rocks contain about 94% of all the carbon on Earth, which equates to approximately 65,000,000,000,000,000 tonnes (65 x 1015 tonnes).
The second biggest storage of carbon is in the form of fossil fuels, which include coal and hold most of the remaining 6% of Earth's carbon.
The remaining carbon pools, although significantly smaller, are very important due to their active interaction with the biosphere and atmosphere.
This includes carbon in the oceans, soils, land-based biomass such as trees, and the atmosphere.
The atmosphere's carbon content, mostly as carbon dioxide and methane, is a focal point of climate change discussions, as its increase from combustion of fossil fuels has profound effects on our climate.
