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Which high-altitude wind system varies in speed based on its distance from the equator and plays a significant role in directing air masses across the globe?

polar winds
jet streams
currents at the equator
thermal currents

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Answered by GPT-5 mini AI
jet streams

They are fast, high-altitude air currents whose strength and position change with latitude (distance from the equator) and they help steer weather systems and air masses worldwide.