Geology Puzzle Solution, By John B.

phosphorus A poisonous element that glows in the dark
igneous A rock formed by magma cooling slowly
uranium A radioactive rock
dome A kind of mountain
gneiss A rock that has a coarse grain that looks like granite
erosion the act of wearing away
pangea The term for all the land in one continent
eruption When ash and lava spew out of a volcano
graphite A rock used in pencils
mantle The layer of the earth below the crust

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