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Ozone in the stratosphere is important because:
Answer & Solution
Correct answer: D.
1. Stratospheric ozone (O₃) absorbs UV-B and UV-C radiation.
2. Without this shield, UV damages DNA and causes skin cancer.
3. At ground level ozone is harmful; high up it is protective.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.2.1_
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