Respuesta :
Subbituminous coal more popular than bituminous coal for electricity because it is easier to extract and last longer.
What is a coal?
Coal is serves as element containing carbon with mixture of other elements like hydrogen, sulfur, oxygen.
However, Sub-bituminous coal contains 35–45% carbon but Bituminous coal, is a tar-like substance used in electricity generation because it is easier to extract.
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