Radioactive substances can cause</h2></div>

40 to 50% depletion in ozone layer occurs in the .......... polar region</h2></div>

BOD is related to</h2></div>

The major ozone depleting substance out of the following is _____________.</h2></div>

Describe how ozone layer is formed?</h2></div>

Which class of carbon compounds are responsible for the depletion of ozone layer at the higher level of the atmosphere?&…

At what height over the earth does the ozone layer exist?</h2></div>

Ozone hole over Antarctica appear during</h2></div>