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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Describe the important aspects of wind speed and direction on dispersal of air pollution
What will be an ideal response?
What might happen to a losing stream as the water passes from flowing over hard, impermeable rocks to flowing over more permeable rocks?
A. No change will occur in the stream flow. B. The stream will gain water and flow faster. C. The stream will lose more water to the subsurface and might disappear.