(i) What is the cause of ozone depletion?

(ii) State the impact of ozone depletion on human life.

Give a reason for each of the following:

1. The snow on the slope of Himalayas in Nepal melt faster than that on the slope towards Tibet.
2. Tropical deserts have a large annual range of temperatures.
3. Equatorial regions have low atmospheric pressure throughout the year.

Name the region in which the following local winds blow:

1. Chinook
2. Mistral
3. Foehn
4. Loo

(i) What are 'doldrums'?

(ii) Why is it so called?