About 70% of total global carbon is found in
(1) Forests
(2) Grasslands
(3) Agroecosystems
(4) Oceans
Sol. Answer (4)
Oceans : For the C, cycling pool consists of 6 × 1014 kg (29%) of free CO2 in the
atmosphere and 1.45 × 1015 kg (71%) dissolved CO2 in hydrosphere.