Question

which is the nature phenomenon causes ozone​

Answer 1

Answer:

Though the major source of ozone is from reaction of the UV rays of the sun with the oxygen molecules and of the resulting singlets with other oxygen molecules in the Earth's stratosphere producing ozone.

Answer 2

Though the major source of ozone is from reaction of the UV rays of the sun with the oxygen molecules and of the resulting singlets with other oxygen molecules in the Earth's stratosphere producing ozone.