you have observed that coal prices and increase price of petroleum products
why? explain in detail
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Coal is classified into four main ranks—lignite, subbituminous, bituminous, and anthracite—depending on the amounts and types of carbon it contains and the amount of heat energy it can produce. Prices are generally higher for coal with high heat content.
The average annual sale prices of coal at mines by main rank of coal in 2020, in dollars per short ton (2,000 pounds) were:
bituminous
$50.05
subbituminous
$14.43
lignite
$22.16
anthracite
$98.68
Explanation:
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