what are the 2 most common elements in earth's crust?
what term identifies hot, melted rock below the earth's surface?
what are three types of magma determined by there density
what are the two types of sedimentary rocks?
what are the 3 subatomic particles and what is their electric charge?
what physical property of an element is determined by dividing the elements mass by it's volume?
what are the two types of igneous rock?
what are the two types of metamorphic rock?
what two elements comprise 99% of earths atmosphere?
what term refers to the decaying organic matter found on the surface of the ground?
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