Question

define depletion of ozone layer ​

Answer 1

Answer:

Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole.

Answer 2

Answer:

CFCs released from Western countries spread all over the world before destroying the ozone layer. This is also called. ozone depletion.