Porosity is

A. the ability of a sediment to retard water
B. the percentage of a rock's volume that consists of voids or openings
C. the capacity of a rock to transmit a fluid
D. None of these choices are correct.


Answer: B

Environmental & Atmospheric Sciences

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Oil wells are usually able to extract ________ of the petroleum present in an oil reservoir.

A. About 90 percent B. 30 to 40 percent C. All D. About 75 percent E. Less than 10 percent

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Given the calculation: (6.02 x 10^23)/12.00 = ? What is the answer reported to the correct number of significant figures?

A) 1.993 x 10^-23 B) 1.99 x 10^-23 C) 5.017 x 10^22 D) 5.02 x 10^22

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Sodium cyanide is used to stun various species of fish and coral on reefs in order to provide these

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