Evaporites, formed from ___________, are important economically because they are often found at or above 97% purity and are __________.
A. igneous rocks; important due to their strength, lightness, and malleability
B. metamorphic rocks; important due to their strength, lightness, and malleability
C. sedimentary rocks; important due to their strength, lightness, and malleability
D. igneous rocks; therefore concentrated in economically recoverable levels
E. sedimentary rocks; therefore concentrated in economically recoverable levels
Answer: E. sedimentary rocks; therefore concentrated in economically recoverable levels
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Rocks are classified according to their
A. Chemical composition B. Mode of formation C. Physical properties D. Internal structure E. All of these are correct
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