Coal the heat and pressure of deep burial causes the loss of water, methane and carbon dioxide and an increase in the proportion of carbon. Thus first lignite (also called "brown coal"), then sub-bituminous coal, bituminous coal, and lastly anthracite (also called "hard coal" or "black coal") may be formed. The wide, shallow seas of the Carboniferous Period provided ideal conditions for coal formation, although coal is known from most geological periods. The exception is the coal gap in the Permian–Triassic extinction event, where coal is rare. Coal is known from Precambrian strata, which predate land plants—this coal is presumed to
What Is a Man Without a Moustache? Times" had also expressed opinions of a divided nature. He called the film "pleasant if inconsequential", offered an opinion that it contains "good-natured sensibility" and a "slightly fabulous tone" while still feeling like "magic realism, without the magic", and concluded his review by stating that "the pleasant pointless of it all is laced with a tantalizing tease of allegory suggested by the dialectical twins and the strain of mellow nationalism in the dialogue." Reviewing the film for "TV Guide", Maitland McDonagh awarded the film three stars out of four calling it "sardonic" and "absurdist". What Is a Man Without a