You still got it wrong (part 2).
(Commenting system wouldn't let me post this paragraph with the previous one).
Of the total CO2 emitted by burning fossil fuels about 43% remains in the atmospheric increasing CO2 levels. Some is absorbed by the biosphere but most of the rest is absorbed by the oceans. The level of CO2 is a function of the total CO2 in the carbon cycle and the balance between the atmosphere, hydrosphere and biosphere and some smaller source/sinks. The burning of fossil fuels is increasing the total carbon in the cycle The ocean is not a net source of CO2 in the atmosphere and that's easily proven by measurements of CO2 absorbed in the ocean.
