The correct option is B Atmosphere contains about ten percent of total global carbon
Carbon constitutes of 49% of dry weight of organism and is next to water. The cyclic pool consists of 1% of free total global carbon in the atmosphere and 71 % of dissolved total global carbon occurs in the oceans.
Oceanic reservoir regulates the amount of carbon dioxide in the atmosphere.
So, the incorrect statement is- atmosphere contains about 10% of total global carbon.