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Unformatted text preview: a. iron b. aluminum c. silicon d. calcium e. oxygen ______ 6. The second most abundant element in Earths crust is ____________. a. iron b. aluminum c. silicon d. calcium e. oxygen Short Answer 7. List the three main components of an atom. 8. a. List the two main classes of minerals. b. Of these two classes, which one is the most common class of minerals? c. Why is this class the most prominent one for minerals?...
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- Spring '08