The principal gas responsible for global warming is:

✅Explanation: Carbon dioxide (CO₂) is the primary greenhouse gas responsible for global warming. While other gases like CFCs, N₂O, and methane also contribute, CO₂ has the largest overall impact due to its abundance and long atmospheric lifetime.

🔑Key Points:
-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.

🛑 Additional Information::
-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.