alleryWhich layer shields the Earth from harmful UV radiation?
AThe ozone layer
BThe carbon cycle
CThe ocean gyres
DThe polar winds
Answer & Solution
Correct answer: A. The ozone layer
1. Short wavelength UV is dangerous to living things.
2. Most of it never reaches the ground.
3. The ozone layer absorbs harmful UV radiation from the Sun.
4. So the answer is the ozone layer.
_Source: syllabus Science, Ch 13 'Earth as a System: Energy, Matter, and Life'_
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