This type of stone is sometimes added to acidic lakes to lower the acidity.
What is limestone?
100
This type of pollution comes from compounds which come directly out of the smoke-stack, exhaust pipe, or emission source. ?
What is primary pollution?
100
This layer of gas has the ability to absorb ultraviolet radiation and protect life on Earth.
What is ozone?
100
This expecptionally strong warming of eastern pacific waters can result in global temperature and precipitation change.
What is el nino?
200
Not to be confused with Colorado or 'company,' carbon monoxide is also known as this.
What is CO
200
In developing countries the most common indoor pollution is from using biomass as a fuel for this type of activity.
What is cooking?
200
The introduction of chemicals or particulate matter into the atmosphere at concentrations high enough to harm plants, animals, buildings, or to alter ecosystems.
What is air pollution?
200
Most of the earth's air pllution is trapped in this layer of the atmosphere.
What is the troposhere?
200
The most obvious case of industrial smog is due to this.
What is fossil fuels or coal.
300
Thermal inversion is sometimes called this.
What is temperature inversion?
300
Acid rain can slowly dissolve and "deface" monument stone like the monument (in Washington DC), to this president who was assassinated on April 12, 1865.
Who is Abraham Lincoln?
300
These types of pollutants undergo transformation in the presence of sunlight, water, oxygen, or other compounds.
What are secondary pollutants?
300
The thinning of this has increased the amount of UV-B radiation that reaches the surface of Earth.
What is the ozone?
300
The gas which is the largest contributor to earth's atmosphere.
What is nitrogen?
400
Chlorofluorocarbons.
What are CFCs?
400
Volcanoes, lightening and forest fires are all forms of this kind of pollution.
What is natural pollution?
400
Examples of this level of pollution are ozone, sulfate and nitrate
What is secondary pollution?
400
Thermal inversion is caused when a layer of this type of air traps cold air (and the pollution within the cold air) beneath it.
What is warm?
400
This gas is produced by microbes decomposing matter in landfills.
What is methane?
500
Acid rain is the most common form of this.
What is acid deposition?
500
This is most common type of rock on the earth's surface.
What is sedimentary?
500
This type of gas is an indoor pollutant which binds with hemoglobin preventing it from binding with oxygen.
What is radon?
500
The ozone layer exists roughly 45-60 kilometers above the Earth in this layer of the atmosphere.
What is the stratosphere?
500
These are the major source of chlorine in the stratosphere and are used in refrigeration and air conditioning, as propellants in aerosol cans and as “blowing agents” to inject air into foam products like Styrofoam.