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A solid to solid transition can occur between two enantiotropically related polymorphs without going through a melt. Whereas for monotropes conversion can only take place once the material has melted. In other words the transition temperature between enantiotropically related polymorphs is below the melt of the lower temperature melting polymorph whereas ...


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Please take a look at this website, Dr Scotese explains what methods we use to determine how the earth was in the past, and indeed, what it might do in the future. We can never be sure however. He has also posted numerous videos on You Tube. From Dr Scotese's website : The past positions of the continents can be determined using the following five lines of ...


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How do scientists know the precise location, etc. of the earliest supercontinents? Or their configurations far, far into the future? They don't know, particularly with respect to precise location. There are clues in the rock that give some indication regarding latitude. There are clues in the rock, the shapes of the continents, and extant species and ...


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Meteorology relies heavily on a spherical model of the earth. If you consider one of the major "forces," the Coriolis force, it is derivable only from a spherical earth. Now, there are planar representations, where the earth's curvature has a negligible effect, such as mesoscale meteorology or micrometeorology. A sphere also has modeling advantages ...


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