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Published on Apr 14, 2012
Visit http:// www.makemegenius.com ,watch all Science & other educational videos for kids for free. word comes from two Greek language words 'meta' and 'morph' which mean to change form.So we can say that Metamorphic rocks are those rocks which have changed,they were originally sedimentary or igneous rocks but due to heat and pressure inside earth & mountains ,these rocks changed to metamorphic rocks.