Question

Why does earth need an ozone layer ?

A. Gases from space would enter our planet without it
B. It protects earth from ultraviolet radiation
C. Earths atmosphere would fall apart without it
D. It couldn’t function as a planet without it

Answer 1

B it protects earth from ultraviolet radiation which is deadly

Answer 2

B - it protects earth from uv radiation. It differs from normal oxygen (O2) in having three atoms in its molecule (O3)