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Simulation:
Carbon cycle. ©Team C0111040, ThinkQuest 2001.


Diagram:
Layers of atmosphere. ©Team C0111040, ThinkQuest 2001.


Diagram:
Nitrogen cycle. ©Team C0111040, ThinkQuest 2001.

Diagram:
Atmospheric CO2 concentrations and fossil fuel emissions. ©Team C0111040, ThinkQuest 2001.

Diagram:
Indoor sources of air pollution. ©Team C0111040, ThinkQuest 2001.

Photograph:
Emission of gases from vehicles. ©Team C0111040, ThinkQuest 2001.


Photograph: Air pollution from factories. ©
Microsoft Encarta Online. Permission stated in Terms of Use.


Photograph: Air pollution from industrial plants. ©
Steve Gabany. Permission obtained on 20 Feb 2001. E-mail message.


Photograph: Forest in fires. ©
AdCouncil. Permission obtained on 22 Feb 2001. E-mail message.

 

Air Pollution

 

Overview

Air pollution is indication of disturbances to the composition of compounds in the atmosphere, as it may be summarized as shown:

  • excess emission of gases/vapors into atmosphere

  • saturation of chemical compounds/particulates

  • rate of dissipation < (smaller than) rate of absorption through various cycles (i.e. carbon and nitrogen cycle)

  • emergence of new chemical reactions of reactive and non-biodegradable compounds.

Global warming, acid rain, smog, ozone depletion are some effects of air pollution.

In relation to this, we may observe the cycle which involves in our daily lives: carbon and nitrogen cycle. These 2 cycles are the most important of all, regulating the composition of carbon and nitrogen of Earth. Imagine the reverse is to happen.... 

 

See the left bar to discover exciting facts about the atmosphere and air pollution.

 

Sources and Methods

We can classify major sources that lead to air pollution to the following categories:

  • motor vehicle exhaust

  • heat and power generation facilities

  • industrial processes

  • auto manufacturing

  • fertilizers plants

  • building demolition

  • solid waste disposal

  • solvent evaporation

  • volcanic eruption

  • fuel production

  • roadway construction

  • electrical components manufacturing

  • extraction of metals

  • forest fires

  • agriculture

Please click here to view a comprehensive table explaining the above major sources.

 

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