A surface low pressure center is generally associated with ____ on an upper level isobaric chart
a. a trough
b. a ridge
c. zonal flow
d. convergence
e. divergence
ANSWER: a
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Indicate whether the statement is true or false
In 1957, the Soviet space program launched _______________, the first artificial Earth satellite.
Fill in the blank(s) with the appropriate word(s).
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