1There is less snow on the Himalaya than before, and places that used to be snow covered are turning into bare black ridges. Why might this be happening? Discuss with reasons.
2Diseases such as cataracts and genetic changes are becoming more common in people. Why? Discuss with reasons.
3What is ozone? How is it different from oxygen?
4How is ozone formed in the atmosphere? Write the chemical equations.
5What is the ozone layer? Where is it and at what height?
6Why is the ozone layer called the protective layer? State its importance.
7What is ozone layer depletion? Name the chemicals that cause it.
8How do CFCs destroy the ozone layer? Explain with equations.
9Describe the effects of ozone layer depletion on human health and on plants.
10Write four ways to protect the ozone layer.
11If ultraviolet rays are needed to make ozone, why is most ozone found high in the stratosphere rather than near the ground?