Cyanosis BY PANDIAN M. # MBBS#BDS#BPTH#ALLIED SCIENCES
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The document discusses the results of a study on the impact of COVID-19 lockdowns on air pollution. The study found that lockdowns led to significant short-term reductions in nitrogen dioxide and fine particulate matter pollution globally as human activity declined. However, the improvements were temporary and air quality returned to pre-pandemic levels as restrictions eased and activity increased again.
