What is natural gas? What is its advantage? Name one region

What is natural gas? What is its advantage? Name one region of India here its reserves are found.

Natural gas It is an important clean energy resource found in association with or without petroleum. It is also used as an industrial raw material in the petrochemical industry.
Advantage:
It is an environment friendly fuel because of its low carbon dioxide emission during use.
Natural Gas Reserves Large reserves of natural gas have been discovered in the Krishna-Godavari basin.