What will most likely happen to a plant that doesn't receive enough c02

There was a correct answer already on : link

(Please don't flag me because of the link, but this is a REALLY GREAT answer)

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.