I know that purple air is the Particulate Matter 2.5 and 10 in the air. But why is it call purple...
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by denissebn_06 |
June 18, 2021 19:32 |
I know that purple air is the Particulate Matter 2.5 and 10 in the air. But why is it call purple air? Somebody knows where the name comes from?
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