Q: 82 (CDS-I/2012)

Consider the following state- ments :
1. Ozone is mostly found in the stratosphere.
2. Ozone layer lies 55-75 km above the surface of the Earth.
3. Ozone absorbs ultraviolet radiation from the Sun.
4. Ozone layer has no significance for life on the Earth.
Which of the statements given above are correct ?
stats: 
0,2032,512,224,2032,240,48

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