Fire hydrants should be inspected at least once every _____ months.

a. 6
b. 24
c. 18
d. 12


Answer: d. 12

Environmental & Atmospheric Sciences

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Days with temperatures above 90 degrees Fahrenheit and above 90 percent humidity are common in the southern United States

a. True b. False

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What are mobile belts of a continent? What will be an ideal response?

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Many automobile engines are cooled by water that flows in a closed circuit through the engine block and the car's radiator. How many different heat transport processes do you find in operation here?

What will be an ideal response?

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Which of the following rocks represents the highest grade of metamorphism?

A) Biotite schist B) Quartzite C) Phyllite D) Gneiss

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