Answer:
The ozone layer
Step-by-step explanation:
The ozone layer is a gaseous cover found in the stratosphere. It is extremely important for life on Earth because it absorbs ultraviolet gases emitted by the sun. In the 1980s, scientists were able to prove that the continuous emission of gases by industry destroyed the stratosphere's ozone molecules. In order to prevent the collapse of the ozone layer, the international community signed in 1987 the Montreal Protocol, a document aimed at reducing the emission of gases that caused its destruction.