Final answer:
Wind shear involves changes in wind speed and direction within the same column of air, affecting aviation and weather patterns.
Explanation:
Wind shear refers to a change in speed and direction of the wind at different altitudes in the same column of air. This phenomenon is important in aviation as it can cause turbulence and affect aircraft performance. Wind shear can be vertical or horizontal, impacting weather patterns and playing a crucial role in storm development.
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