A. The burning of large quantities of fossil fuels which take millions of years to replenish
The three parts of the nitrogenous base, a phosphate group, and sugars
The right answer is B.carbon fixation.
Rubisco, by its full name ribulose-1,5-bisphosphate carboxylase / oxygenase, is the key enzyme for the fixation of carbon dioxide CO2 in plant biomass by initiating the Calvin cycle, in relation to the solar energy captured. by the chlorophyll at the origin of the processes of photosynthesis. It catalyzes both carboxylation and oxidation of ribulose-1,5-bisphosphate.