Environmental Engineering in CE

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____ high above earth’s atmosphere, which absorbs it.

  • A. Hydrogen
  • B. Carbon dioxide
  • C. Ozone
  • D. None of these
Answer: Option C.
Explanation: 

No answer description available for this question

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