When temperatures are below freezing, the temperature at which air becomes saturated leading to the formation of frost is the

A) dew point.
B) frost point.
C) absolute humidity.
D) relative humidity.


B

Environmental & Atmospheric Sciences

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Which is an igneous rock?

  1. Basalt
  2. Quartz
  3. Limestone
  4. Marble

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Critical Thinking In the accompanying figure, which U.S. expenditure in 2008 is equal to the amount of money needed to protect tropical forests?

What will be an ideal response?

Environmental & Atmospheric Sciences

A parcel of saturated air at 20°C would have approximately ________ times ________ water vapor than saturated air at 0°C.

A. 20; more B. 20; less C. 5; more D. 5; less

Environmental & Atmospheric Sciences

The type of rock shown in this photograph is

A. sandstone. B. breccia. C. conglomerate. D. shale.

Environmental & Atmospheric Sciences