Question

the primary compositin coal is​

Answer 1

Explanation:

Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.

Answer 2

Answer:

Coal is a combustible black or brownish-black sedimentary rock, formed as rock stratacalled coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.[1] Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.[2] Vast deposits of coal originate in former wetlands—called coal forests—that covered much of the Earth's tropical land areas during the late Carboniferous(Pennsylvanian) and Permian times

Explanation:

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