List eight common nonsilicate minerals and their economic uses
What will be an ideal response?
galena (sulfide; lead ore)
gypsum (sulfate; drywall)
halite (halide; table salt)
graphite (native element carbon; pencils, lubricant)
hematite (oxide; iron ore)
chalcopyrite (sulfide; copper ore)
corundum (oxide; abrasive)
gold (native element; jewelry, electronics, dentistry)
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Of the three sciences, physics, chemistry, and biology, the most complex is
A. biology, because it is based upon both the laws of chemistry and physics. B. physics, because it involves many mathematical equations. C. chemistry, because there are so many possible combinations of atoms. D. All three of these sciences are equally complex.
Why has China become the world's largest emitter of greenhouse gases, and what is its government doing about this problem?
What will be an ideal response?
The computer-based technology called ____ represents a "marriage" between computer cartography and database management
a. spectral analysis b. multi-spectral scanning c. spatial analysis d. geographic information system (GIS) e. conformal projection
During the last major glacial expansion, sea level was higher than it is today
a. True b. False Indicate whether the statement is true or false