Why is natural gas nonrenewable?

Answer 1

Renewable sources are the sources that naturally replenish themselves. This is not the case with natural gas. Forms of renewable energy are the sun and wind energy. There is a new source for both at all times.

Answer 2

Natural gas is considered nonrenewable because it is formed from the remains of plants and animals that lived millions of years ago and takes a long time to replenish. Once it is extracted and used, the process to create more natural gas cannot occur within a human timescale.