Why are silicate minerals the most common minerals in the crust?
A) because oxygen and silicon are the most common elements in the crust
B) because carbonate and oxide minerals are more easily weathered
C) because their building block is in the shape of a tetrahedron
D) because they include elements such as magnesium, sodium, and potassium
A
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What might happen to a losing stream as the water passes from flowing over hard, impermeable rocks to flowing over more permeable rocks?
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One evolutionary trend in ungulates was ____________________, a change in tooth structure designed to provide a
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