ALWAYS READY, CONNECTED, AND FAST For Alexa device owners, the free Amazon Alexa App is a companion to your Alexa device for setup, remote control, and enhanced features. Alexa is always ready to play your favorite music, provide weather and news updates, answer questions, create lists, and much more.
Air pollution is the introduction of particulates, biological molecules, or other harmful materials into Earth's atmosphere, causing diseases, allergies, death to humans, damage to other living organisms such as animals and food crops, or the natural or built environment.
Health & Environmental Effects of Air Pollution. Health Effects. Air pollution can harm us when it accumulates in the air in high enough concentrations. Millions of Americans live in areas where urban smog, particle pollution, and toxic. pollutants pose serious health concerns.