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air pollutantsModerator: BioTeam
3 posts • Page 1 of 1
air pollutantsconcentration of air pollutants highest when?
12 a.m. 6 a.m. 12 noon 6 p.m.
In a city, it is about 4-6 pm, as mithrill said
Outside the city it's constant i guess "I have no intention of stopping anytime soon. I want to understand the universe and answer the big questions, that is what keeps me going" - Stephen Hawking
3 posts • Page 1 of 1
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