The ozone layer serves as protection of all the living things from too much sunlight.
The ozone layer found in the troposphere is really important because it blocks the ultra violet rays coming from the sun. If the ozone layer will be destroyed, the earth will heat up and the living organisms on earth will die.
Nowadays, we can experience too much heat from the sun, it is because the ozone layer is slowly becoming thin each day. The cause of this is the harmful human activities that we do, such as the burning of fossils, the factories, the emissions from cars. These human activities causes eruption, flood, typhoons and acid rains that contribute to destroy the ozone layer.
What can we do to avoid the ozone layer from being destroyed is to be a responsible human being. We need to lessen the factories that emits smoke pollutants, reduce cars and take care of our environment.
More about the importance of ozone layer here: