GEOLOGY

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 a non-renewable energy source because it takes millions of years to form.

Detailed explanation-3: -Coal is a fossil fuel of sedimentary origin that has formed by coalification of vegetation over millions of years. Black coal consists of the higher rank anthracite, bituminous and sub-bituminous coals. The lower rank brown coal is sometimes known as lignite.

Detailed explanation-4: -Coal is a non-renewable energy resource, and a fossil fuel. It comes from the remains of plants that lived hundreds of millions years ago. The formation of coal takes millions of years. Wind is a renewable energy resource.

Detailed explanation-5: -1. Coal and petroleum are fossil fuels.