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i) State three factors which contribute to the development of deserts.
ii) Name three types of deserts according to the nature of their surfaces.

Answer Text:
i) - An increase in temperatures accompanied by excessive evaporation.
- Prolonged period of drought or very low rainfall.
- Existence of cold ocean currents off shore which flow across the path of onshore rain bearing winds.
- Presence of high mountains which block rain- bearing winds and cause a rain shadow effect.
- Remoteness of land in the interior of a continent, far away from the direct influence of the sea.
- Location of an area in a region of anticyclones where winds are descending and diverging.
- Human activities such as deforestation, overgrazing and over drawing of underground water reserves.
ii) - Sandy desert
- Stony desert
- Rocky desert