What type of silicate minerals is shown from this arrangement of silicon tetrahedron?
A. double chains
B. single chains
C. frameworks
D. sheets
E. independent tetrahedra
Answer: D
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A conductor and an insulator are actually
A. one and the same. B. opposites. C. similar in some substances. D. none of the above
A section of crust is pushed up from below creating a dome-like mountain. What kind of mountain is this?
A. fault-block mountain B. upwarped mountain C. folded mountain D. volcano
The shape of the caudal fin of a shark is referred to as ________
A) forked B) heterocercal C) lunate D) rounded E) truncate
What is the minimum acceptable level of protective equipment when conducting forcible entry during fire suppression operations?
a. helmet, coat and gloves b. helmet and eye protection c. gloves and eye protection d. full structural firefighting PPE