Question

How does ozone depletion affect the atmosphere?

Answer 1

Ozone protects us from the harmful rays and scroching heat of the sun. The depletion of ozone will allow the heat to pass through.

Answer 2

ozone basically forms a protective layer around the earth 
it protects us from the harmfull UV rays of the sun
UV rays darken the colour of our skin but when exposed in large amounts, it can have a devastating effect on us
ozone layer depletion is mainly due to CFC's