Question

What factor has contributed to the thinning of the ozone layer?

Answer 1

hope this helps you mark as brainliest

Answer 2

1. Nitrogen oxides are released from vehicles,industries and supersonic jet aeroplanes. These gases reach the stratosphere and weaken the ozone atoms and the ozone layer gets thin allowing harmful UV B rays to reach the ground level.
2. Chlorofluorocarbons (CFC) are used in refrigerators, air conditioners, foam-blowers and aerosols. These are called freons. In fire extinguisher,halons are used. When CFC and halons are used, the gases released from them destroy the ozone atoms and ozone layer gets thin and harmful UV rays reach the earth. In their place, we now get substances that cause lesser damage to the ozone layer.
3. We have been indiscriminately using chemical fertilizers and pesticides in cultivation for high yield. The CFC and methane released from the contribute to the thinning of the ozone layer and harmful UV rays reach the earth.