What type of silicate minerals is shown from this arrangement of silicon tetrahedron? 

A. double chains
B. sheets
C. frameworks
D. independent tetrahedra
E. single chains


Answer: C

Environmental & Atmospheric Sciences

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a. True b. False

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Which of the following is a capability of a geographic information system (GIS)?

a. data storage b. data manipulation and analysis c. map production with overlays of different information layers d. All of these

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The most serious drawback to fuel cells is the expense of providing an oxygen source.

Answer the following statement true (T) or false (F)

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