alleryOzone in the stratosphere is important because:
AIt produces vitamin D
BIt supplies oxygen for respiration (option)
CIt cools the Earth via reflection
DIt absorbs harmful UV radiation from the Sun
Answer & Solution
Correct answer: D. It absorbs harmful UV radiation from the Sun
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: syllabus Science, Ch 13 "Our Environment", §13.2.1_
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