Dark Silicates have a specific gravity of 3.2 to 3.6 and are composed primarily of silica tetrahedral and ________
A) aluminum and magnesium
B) aluminum and sodium
C) potassium and iron
D) iron and magnesium
E) potassium and calcium
D
Environmental & Atmospheric Sciences
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Compaction at landfills is the only proven way to significantly reduce the volume of municipal solid
waste. Indicate whether the statement is true or false.
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A water wave reaches an unstable breaking point when the steepness ratio, H/L, reaches ________.
A. 1:7 B. 1:8 C. 1:2 D. 1:10 E. 1:5
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Which of these U.S. cities would be most affected by rising sea levels?
A. Miami B. Dallas C. Denver D. Atlanta
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Which has more atoms: a 1-gram sample of carbon-12 or a 1-gram sample of carbon-13?
A. a 1-gram sample of carbon-13 B. a 1-gram sample of carbon-12 C. They have the same number of atoms. D. More information is needed.
Environmental & Atmospheric Sciences