Which gas is responsible for global warming ?

Option 2 : Carbon dioxide

The correct answer is Carbon dioxide.

• Carbon Dioxide is the gas, which is more responsible for global warming.
• Various factors like Concentration in atmosphere, Heat absorption and Lifetime of the gas decide the contribution of a gas to global warming.
• Of all the Greenhouse gases, CO₂ has the highest concentration and also has a high heat absorption capacity.
• So all climate change policies and discussions are around reduction of CO₂ and reducing carbon footprint.
• The other gases like CO(Carbon monoxide) indirectly contribute to global warming by altering the amount of other Greenhouse gases.

• Global warming refers to the heating of earth’s atmosphere beyond desirable levels.
• The imbalance in the composition of gases in the atmosphere, which has relatively more capacity to absorb heat radiation, is the main cause for global warming.
• The gases contributing to global warming are called Greenhouse gases.
• The major Greenhouse gases are Carbon dioxide(CO₂), Methane(CH₄), Nitrous Oxide(N₂O) and Water vapour.
• Other gases like Fluorinated gases (like HFC, CFC, ) also contribute to global warming.