________% of Facebook activity is outside the United States
A) 25
B) 46
C) 63
D) 80
D
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Which of the following resources does a meteorologist use to produce an ensemble 500 hPa forecast?
A. radar displays B. physical climate model C. upper-air chart D. surface chart
Describe Hawaiian cultural changes over the last century
What will be an ideal response?
Ice storms occur when which of the following conditions prevail?
A) Rain drops circulate repeatedly above and below the freezing level in a cloud. B) Moist, cool air is adiabatically cooled to the freezing point. C) A cold front pushes warm, moist air to the freezing level in a cloud. D) A layer of warm air is between two layers of cold air.
There are several long-term changes in Earth's orbit that affect how heat from the Sun is distributed over the planet. Which of the following describes how the orbit changes from being elliptical to more circular?
A. solar obliqueness B. axial cyclicity C. eccentricity D. axial tilt E. precession