What is natural gas, and what advantages and disadvantages does it have as a source of energy?

Answer:

Natural gas is a fossil fuel composed mainly of methane and found in underground deposits. It is used to generate electricity and provide heat for homes and industry. Compared with coal and oil, burning it releases less carbon dioxide and fewer air pollutants for the same amount of energy. However, it is nonrenewable, and methane leaks can contribute strongly to climate change. Extracting and transporting natural gas can also disturb land and water.