Explanation

(a) Definition of climate: Climate is the average Condition of the atmosphere of a place taken over a long period of time usually 30- 40 years.
(b) Diagram above shows the Climatic belts of the Greek System of classification

(c) Areas of hot desert climates: North Africa -Sahara Middle East - Arabian desert; Iran - Iranian desert; lndia - Thar desert; Australia GreatAustralian desert, South America (Peru) Atacama/Peruvian desert; North AmerIca (California/Mexico)- Mohave desert; S. W. Africa (Angola)-Kalahari desert, S.w. Africa (Namibia) -Namibia desert.
(d) Characteristics of hot geserts: - high temperatures usually above 30°c; aridity; varied annual range of temperatures (9- 20°c); - high rate of evaporation; high daily Emperature range (17o- 22°c); - low relative humidity is low usually below 30%, - frost may Occur at night;- low annual rainfall below 25Umm, - many months without rainfall, up to 10 months, - rainfall is usually sudden and violent (unreliable) - insolation is intense and duration is long, Wind erosion is predominant; cloudless sky; - Occasional dust storms, associated with trade Winds; presence of specially adapted plants, - little or no vegetation; presence of hard pans.

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