Question

Which of these is the major cause of the depletion of the ozone layer?

Answer 1

Depletion of ozone layer:

1. The reduction of the ozone layer in the upper atmosphere is referred to as ozone layer depletion.
2. Ozone molecules are destroyed when chlorine and bromine atoms in the atmosphere collide with them.
3. 100,000 ozone molecules can be destroyed by a single chlorine molecule. It depletes faster than it can be replenished.

The major cause of the depletion of the ozone layer are as follows:

1. Man-made chemicals, particularly halocarbon refrigerants, solvents, propellants, and foam-blowing agents, are the primary cause of ozone depletion and the ozone hole (chlorofluorocarbons).
2. CFCs (chlorofluorocarbons) are thus the primary cause of ozone layer depletion.