Ascending parcels of unstable air seldom extend above the tropopause because
A) the troposphere is extremely stable
B) the troposphere is extremely unstable
C) the stratosphere is extremely stable
D) the stratosphere is extremely unstable
Answer: C
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Indicate whether the statement is true or false.
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A) 1,780 years B) 17,800 years C) 780,000 years D) 1.768 million years
Which African nation does the United States consider an economic powerhouse and critical to the stability of the continent?
a. Botswana b. Lesotho c. Swaziland d. South Africa e. Congo
Air, after being heated by conduction or radiation, ____
a. expands in volume and increases in density b. expands in volume and decreases in density c. decreases in volume and increases in density d. decreases in volume and decreases in density e. does not change in volume or density