environmental science question

Environmental Science
Tutor: None Selected Time limit: 1 Day

 

The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

A.heliumB.ozone
C.oxygenD.methane
Jan 6th, 2015

B. ozone

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Jan 6th, 2015

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Jan 6th, 2015
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Jan 6th, 2015
Dec 10th, 2016
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