|The mixture of gases that surround earth.
|A form of oxygen that has three oxygen atoms in each molecule instead of the usual two it is a toxic form of oxygen.
|A change to the atmosphere that has harmful effects.
|Solid particles and gases released into the air from a smockstack or motor veichle.
|A brownish haze that is a mixture of ozone and other chemicals, formed when nitrogen oxides,hydrocarbons and other pollutants react with one another in the presence of sunlight.
|The condition in which a layer of warm air thats polluted air close to earth's surface.
|Rain that is more acidic than normal, caused by release of molecules of sulphur dioxide and nitrogen oxide into the air.
|Chlorine compounds formerly used in air conditioners,refrigarators and spray cans; also called CFC's.
|The process by which heat is trapped in the atmosphere by water vapor,carbon dioxide,methane and other gases that form a blsnket around the earth.
|Gases in the atmosphere that trap heat.
|A gradual increase in the temperature of earth's atmosphere.
|Elavation above sea level.
|The lowest layer of earth's atmosphere, where weather occurs.
|The second-lowest layer of earth's atmosphere; the ozone layer is located in the upper stratosphere.
|The middle layer of earth's atmosphere; the layer in which most meteorites burn up.
|The outermost layer of earth's atmosphere.
|The lower part of the thermosphere, where electrically charged particles called ions are found.
|A colorful,glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere; also called the northern lights.
|The outer layer of the thermosphere extending outward into space.