The ozone layer in earth's atmosphere is crucial for human survival because it:
Answer & explanation
Correct answer: option 3
An ozone layer, present in the stratosphere, reflects the ultraviolet rays emitted by the sun.
The ozone layer acts as a shield for life on Earth. Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms' protective layers, like skin.