Why is the ozone layer in Antarctica significant?
A.
It is getting thinner, allowing more harmful ultraviolet rays to reach Earth.
B.
It is a valuable natural resource, but harvesting it could harm native wildlife.
C.
It exists nowhere else, so scientists must travel there to study its properties.
D.
It could grow dangerously large if climate change continues.
A. It is getting thinner, allowing more harmful ultraviolet rays to reach Earth.
A.
It is getting thinner, allowing more harmful ultraviolet rays to reach Earth.