Non-clastic rocks have chemical or organic origins. Names of non-clastic rocks are based on their compositions. A calcite-rich rock with many fossils is called a fossiliferous limestone. ... Sedimentary rocks with non-clastic texture include fossiliferous limestone (above left), chert (above right) and coal (right).Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris. Chemical sedimentary rocks, such as rock salt, iron ore, chert, flint, some dolomites, and some limestones, form when dissolved materials precipitate from solution.
An electron Microscope...................
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Teenager's circadian rhythms – the cycle of sleep and wakefulness – typically begin two hours after adults. Neuroscientists say they are biologically predisposed to go to sleep around midnight and not feel fully awake and engaged until between 9am and 10am
Explanation:
Well what I know of it’s coal