The effect of friction on air: B. is relevant only within the planetary boundary layer.
In Science, there are different types of force that acts on a physical object and these include the following:
Frictional force can be defined as a type of force that resists and slows the relative motion of two physical objects when there surfaces come in contact. This ultimately implies that, a frictional force prevents two surfaces from easily sliding over or slipping across one another.
Based on scientific research and experiments, we can reasonably infer that the effect of friction on air is relevant and important only within the planetary boundary layer.
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Complete Question:
The effect of friction on air:
A. increases wind speed.
B. is relevant only within the planetary boundary layer.
C. causes airflow to cross isobars rather than run parallel to them.
D. increases the Coriolis force. E. increases with height.
