Final answer:
The motto, "dilution is the solution to pollution," improved local air quality but decreased air quality downwind.
Step-by-step explanation:
The student is asking about the impact of a motto on air quality. The motto, "dilution is the solution to pollution," caused local air quality to improve, but it decreased air quality downwind. The term "downwind" refers to the direction in which the wind is blowing, indicating that the reduced air quality was experienced in the direction opposite to the wind's movement. In this case, the local air quality improved, but the pollution was carried towards areas downwind.
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