If you were studying the geologic period when the majority of today's coal was produced,you would be studying which period?

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During the Carboniferous period,a great swamp forest encompassed what is now northern Europe,the Ukraine,and the Appalachian Mountains in the United States.The amount of biomass in a Carboniferous forest was enormous,and occasionally the swampy water rose and the trees fell.Submerged trees do not decompose well,and their partially decayed remains became covered by sediment that sometimes changed to sedimentary rock.Sedimentary rock applied pressure,and the organic material then became coal,a fossil fuel.This process continued for millions of years,resulting in immense deposits of coal.

If You Were Studying the Geologic Period When the Majority