Will global warming change the amount of C02 and 02 in photosynthesis?

Question

Will global warming change the amount of C02 and 02 in photosynthesis?

Answer 1

Already, and considered an example of "convergent evolution", many plants use a process which more efficiently captures Carbon.

"5% of Earth's plant biomass and 1% of its known plant species" use the process, but "they account for around 30% of terrestrial carbon fixation"

http://en.wikipedia.org/wiki/C4_carbon_f...

Answer 2

For individual plants, the increased CO2 won't significantly boost photosynthesis.  Not only is the overall amount of CO2 only slightly higher as a percentage, plants are still getting plenty.  If you put them in a far richer CO2 environment, they only do a little better.

In other words, CO2 is not the limiting nutrient.  Usually an inorganic polyatomic ion is, and in a natural environment that is usually phosphate ion.  For non-legumes, the limiting nutrient in a particular soil might be nitrate ion.  But in any case, it's not carbon dioxide.