ID 311088804 © Tharinratjung | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
air air pollution quality index allergy carbon change checking clean climate climate color diagram dirty dust eco emission environment excessive filter flat gases harmful health health risks hygiene icon indicator level measurement measuring meter monitoring nature particles pollutants protection quality quantities substances respiratory scale science smog smoke toxic unhealthy urban vector