Approximately how many GtC are accumulating in the atmosphere due to human activity each year?

There were 600 Gigatons of carbon (GtC) in the atmosphere in 1850. Also Why is the answer from number 9 (the amount that ends up in the atmosphere) only about 1/2 of the total of 10 GtC released in 2014? Where does the rest of the carbon go?
Answers

cosmo

The rest of the CO2 dissolves in the oceans, making them more acidic.

Joseph

The plants convert carbon dioxide gas into solid carbon.

Solar Wind

CO2 is a trace atmospheric gas that does not trap heat and is a non-factor in Climate Change. The idea of "trapping heat" violates the Laws of Thermodynamics is "junk made up science" that has no experimental scientific support.