Air quality vector illustration. Diagram with city pollution health sections from good to healthy and hazardous. Educational scheme with excessive quantities of substances or gases in environment. premium vector by VectorMine

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vector illustration nature environment air health danger protection hazard standard concept effect smoke smog city ecology toxic measurement clean hygiene unhealthy earth dirty chemical quality warning gas good metropolis climate index filter warming dust scheme educational dioxide emission exhaust diagram harmful carbon monitoring moderate co2 labeled infographic aqi

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