Seudónimo Seudónimo

01-11-2016
Computers and Technology

contestada

A major ozone depletion happened in the 1900s. What was it caused by

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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

01-11-2016

It was caused by air pollution and the global warming

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