As air rises, it ________. As air falls it ________
a. compresses and cools; expands and heats
b. expands and heats; compresses and cools
c. expands and cools; compresses and heats
d. compresses and heats; expands and cools
c
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Which of the following gases is responsible for the greenhouse effect on Venus?
A. ozone B. nitrogen C. carbon dioxide D. oxygen
The largest sector of daily water withdrawals in the water budget for the United States is presently that taken for agricultural purposes
Indicate whether the statement is true or false
In a sample of a pure carboxylic acid, how many hydrogen bonds are formed between a pair of carboxylic acid molecules?
A) 1 B) 2 C) 3 D) 4
The Moho is the boundary between the crust and the ________
A) mantle B) ocean basins C) continents D) outer core E) inner core