Which list presents, in the correct order, forms of coal from the first stage of development to the last stage of development?
peat, lignite, bituminous, anthracite
peat, bituminous, anthracite, lignite
peat, lignite, anthracite, bituminous
bituminous, peat, lignite, anthracite
1 answer
peat, lignite, bituminous, anthracite