The ____ jet is known to show seasonal variations. In winter, the winds are stronger and the jet moves farther south as the leading edge of the cold air can extend into subtropical regions, as far south as Florida and Mexico. In summer, the jet is weaker and is usually found over more northerly latitudes

a. subtropical
b. tropical easterly
c. low-level
d. polar-front
e. nocturnal


ANSWER: d

Environmental & Atmospheric Sciences

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