Which of the following undergoes a downward motion during an upper-air front?
A. tropopause
B. low-level jet
C. mesopause
D. stratopause
Answer: A
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The capacity of the atmosphere to disperse and dilute pollutant materials is:
A) the same in all locations. B) large and unchanging. C) highly variable and based on the weather. D) predictable and consistent from day to day.
The current rate of extinction is between _____ and _____ times the rate that existed before humans arrived on Earth
a. 5 and 10 b. 10 and 100 c. 100 and 1,000 d. The rate is the same as it was before humans arrived on earth. e. There is no way to determine the extinction rate before humans arrived on earth, so these numbers cannot be estimated or compared.
Put the following steps in the correct sequence according to how one would take a survey reading
1. The angle between the line sighted to the star and a line drawn directly toward Earth's center permits calculation of latitude. 2. Surveyors sight a telescope on the North Star, which is almost directly above Earth's rotation axis. 3. A table is set up with its level surface perpendicular to a line directed towards Earth's center. A) 1, 2, 3 B) 2, 1, 3 C) 3, 2, 1 D) 3, 1, 2
Most aquifers are ____ naturally by precipitation that sinks downward through exposed soil and rock.
A. emptied B. desalinated C. recharged D. transpired E. confined