Env Issues - OZONE (4)

Env Issues - OZONE (4) - Depletion of Ozone Layer IV....

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Depletion of Ozone Layer Geography 12 Environmental Issues | Page 6 IV. DEPLETION OF OZONE LAYER What is depletion of ozone layer? Ozone depletion occurs when the natural balance between the production and destruction of stratospheric ozone is tipped in favour of destruction. Observations of an antarctic ozone "hole" and atmospheric records indicating seasonal declines in global ozone levels provide strong evidence that global ozone depletion is occurring. Acid rain kills trees and aquatic life. No fish life in this lake. What causes depletion of ozone layer? Ozone-depleting substances cause depletion of ozone layer. They contain various combinations of the chemical elements chlorine, fluorine, bromine, carbon, and hydrogen and are described by the general term HALOCARBONS: CFC’s (chlorofluorocarbons - compounds that contain only chlorine, fluorine, and carbon), carbon tetrachloride, and methyl chloroform are used in many applications including: o refrigeration, air conditioning, foam blowing,
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This note was uploaded on 01/23/2012 for the course GEOGRAPHY 12 taught by Professor Staff during the Fall '08 term at Concordia AB.

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Env Issues - OZONE (4) - Depletion of Ozone Layer IV....

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