Respuesta :

The majority of SOâ‚‚ released annually in the United States results from combustion of coal.

Combustion is the process of burning any substance in the presence of oxygen. The byproducts released as a result of combustion are light and heat. The products of combustion can be different according to the substance burned. The general products of combustion are carbon monoxide, carbon dioxide, nitrous oxides, sulfur dioxides, etc.

Coal is the result of fossil fuels. It is a blackish deposit of carbon found deep within the layers of earth. The composition of coal consists nitrogen, oxygen, hydrogen, sulfur, etc. apart from carbon.

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