Why is air pressure usually lower at higher altitudes than at lower altitudes?
a. Migration of low-pressure systems.
b. Gravity and molecular density.
c. Colder temperatures.
d. Barometrics.
b. Gravity and molecular density.
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When an occlusion occurs,
A) the warm front overtakes the cold front and the colder air is lifted from the surface. B) the warm front overtakes the cold front and the warmer air is lifted from the surface. C) the cold front overtakes the warm front and the colder air is lifted from the surface. D) the cold front overtakes the warm front and the warmer air is lifted from the surface.
The average land elevation is approximately ____
A) 760 meters (2,500 feet) B) 3,700 meters (12,000 feet) C) 200 meters (650 feet) D) 840 meters (2,756 feet)
Kulturnost in Russian means "uncivilized behavior," such as that displayed by Pussy Riot in Moscow's Christ the Savior Cathedral
Indicate whether the statement is true or false
Deep in the crust, at elevated temperatures, rocks may behave plastically and undergo folding or flow.
Answer the following statement true (T) or false (F)