Well rock A is a sedimentary rock because that's when sand and pebbles pile up to make the stone. and since rock A was pushed down into the earth where extreme heat is it most likely melted and changed to rock B. other rocks formed into it. one of those rocks could be a fossil. so i would choose
A-rock B may have fossils
Russia's ability to exert itself as a world power depends on profit to return the huge power that Russia hold in that area.
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Answer:
Are adapted for holding in moisture
