If there is excess of CO2 in the air, it acts as a/an _____.
supporter of cumbustion
Which of the following are true regarding CO2? (A) Excess of CO2 acts as a pollutant.
(B) Plants take in CO2 for photosynthesis. (C) Deforestation leads to decrease in the amount of CO2 in air. (D) Less quantity of CO2 causes rise in temperature.