Air Crossword

the condition in which air contains substances harmful to living things
pollutants put directly into the air by human activities
consists of smoke, ash, soot, dust, lead, and other particles, from burning fuels
an atmospheric condition in which air above is warmer than that air below.
What keeps the air pollution from reaching dangerous levels?
When people in the same building and experience acute health or comfort related effects that seem to be linked to time spent in the same building.
highly acidic rain, sleet, or snowthat results from the release of oxides sulfur and nitrogen into the air from burning fossil fuels
a sudden influx of acidic water caused by melting acidic snows that rush into the lakes and streams killing life.
fog or haze combined with smoke and other atmospheric pollutants
US federal law designed to control air pollution on a national level
a gas produced naturally in the earth by the decay of Uranium