why is natural gas considered a nonrenewable resource

Natural gas is considered a nonrenewable resource primarily because it forms over millions of years from the remains of ancient plants and animals compressed deep underground, a process that cannot be replicated within a human timescale. It exists in finite quantities beneath the Earth's surface, and the rate at which it is consumed far exceeds the rate at which it can naturally be replenished. Once these fossil fuel reserves are depleted, they cannot be quickly or meaningfully replaced, making natural gas a nonrenewable resource. Additionally, natural gas is classified as a fossil fuel, similar to coal and oil, which all have limited supplies formed over geological timescales.