How do halogens and CFC effect the ozone layer?

Answer 1

Halogens and CFCs (chlorofluorocarbons) destroy the ozone layer. However, since the introduction of the Montreal Protocol, production of these gases has been greatly reduced and the ozone layer is slowly repairing itself.

Answer 2

Halogens (chlorine and bromine) and chlorofluorocarbons (CFCs) react with ozone in the stratosphere, depleting the ozone layer. These compounds break down ozone molecules, leading to the formation of ozone holes. This ozone depletion results in increased levels of UV radiation reaching the Earth's surface, which can have harmful effects on human health and the environment.