A jet stream forms high in the upper troposphere between two air masses<span> of very different temperature. The greater the temperature difference between the air masses, the faster the wind blows in the jet stream.
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So "Differences in temperature between two air masses" is the answer
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Answer:
A
Explanation:
Based on the word choice and structure of the sentence, A gives off the most positive connotation upon reading out of all of your choices.
Hope this helps!
