A mineral deposit can be classified as an ore deposit when

A) valuable metals are present in the deposit.
B) valuable metals in the deposit can be mined at a profit.
C) it contains valuable fossil fuels.
D) it contains valuable gemstone quality minerals.


B

Environmental & Atmospheric Sciences

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The relative humidity would be ________% if the actual water vapor in the air were 10 grams per cubic meter, the air's capacity to hold water vapor were 20 grams per cubic meter, and the dew-point temperature was 20 degrees Celsius

A) 10 B) 20 C) 50 D) 2 E) 200

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Who reputedly coined the term "geography"?

A. Ptolemy B. Hipparchus C. Eratosthenes D. Strabo

Environmental & Atmospheric Sciences

Landslides and ground motion are significant sources of danger created by earthquakes. Indicate whether the statement is true or false

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Until regulation of air pollution began in the 1950s, the greatest influence on emissions of air pollutants was/were:

A) lack of education about pollution's ill effects. B) macroscale atmospheric changes. C) both economic conditions and population growth. D) poor technology.

Environmental & Atmospheric Sciences