The Air We Breathe Crossword

the presence in or introduction into the air of a substance which has harmful or poisonous effects
fog or haze combined with smoke and other atmospheric pollutants
a layer in the Earth's stratosphere that protects us from harmful UV Rays
gas that makes up the Ozone layer but can be harmful to humans as ground level; one of the main ingredients in smog
about how many days does it take for dust and soot to be washed out of the atmosphere by rain fall
one of the main air pollutants in the U.S. given off by aircraft
air pollutant that is given off by cars and other machinery that burns fossil fuels
air pollutant that is given off by fossil fuel combustion and natural volcanic activity
How far can pollution travel from its source?
a substance enclosed under pressure and able to be released as a fine spray, typically by means of a propellant gas
most abundant gas in our atmosphere; makes up about 78% of the air
most chemically active gas in the atmosphere; makes up about 21% of the air
produced naturally by lightning and bacterial processes involved in plant growth and decay, However, the strongest sources are man-made
NASA satellite built to understand the chemistry of our atmosphere
third most abundant gas even though in make up less than 1% of the air
name given to all the other gases that make up our atmosphere because they exist in trace amounts
clear inert gas; used to make neon signs
second lightest gas, used to fill balloons
an odorless, colorless, flammable gas; mainly comes from bacteria and petroleum fields
the lightest gas that exists and is highly flammable
gaseous form of water
a trace gas that used to make headlights in cars
a colorless, odorless gas in its natural state and is mostly nonreactive; used to make lamps
one of the most common particles that can trigger allergies in humans
Carbon Particles; mainly comes from fires and modified diesel trucks