Coal is a fossil fuel found in solid rock form that is obtained through mining. It is formed from the remains of plants that lived millions of years ago and is a major source of energy worldwide.
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Coal is a solid fossil fuel. It forms from the remains of plants that lived and died millions of years ago, and it is mined for energy production.
Coal is the solid fossil fuel formed from the remains of swamp plants that grew millions of years ago.
It is coal.
Coal is a solid fossil fuel that is formed from the remains of plants that have been subjected to heat and pressure over millions of years.
The mining of oil shale involves extracting kerogen, a solid organic material, from sedimentary rocks. This is typically done using surface mining methods such as open-pit mining, where layers of oil shale are removed for processing. Once extracted, the kerogen can be processed into shale oil through a retorting process.