Seudónimo Seudónimo
  • 01-11-2016
  • Computers and Technology
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A major ozone depletion happened in the 1900s. What was it caused by

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KingdaKa
KingdaKa KingdaKa
  • 01-11-2016
It was caused by air pollution and the extreme heat built up underneath it. 
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anas2002
anas2002 anas2002
  • 01-11-2016
It was caused by air pollution and the global warming
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