SSC MTS EXAM

Detailed explanation-1: -Coal is classified as a nonrenewable energy source because it takes millions of years to form. Coal contains the energy stored by plants that lived hundreds of millions of years ago in swampy forests. Layers of dirt and rock covered the plants over millions of years.

Detailed explanation-2: -Coal is the leading source of energy in the United States. Non-renewable energy comes from sources that will run out or will not be replenished in our lifetimes-or even in many, many lifetimes. Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas.

Detailed explanation-3: -A nonrenewable resource is a substance that is used up more quickly than it can replace itself. The supply of a nonrenewable resource is finite, which means it cannot easily be replenished. Nonrenewable resources are extracted directly from the Earth.