Question

What contributed to the recovery of the ozone layer?

An increase in the Earth's surface temperature


A treaty that banned the use of aerosol cans


An increased volume of chlorofluorocarbon use


A decrease in the amount of ultraviolet radiation produced by the sun

Answer 1

A treaty that banned the use of aerosol cans.

Step-by-step explanation:

Answer 2

A treaty that banned the use of aerosol cans decreased dangerous emissions made by their use and production.