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GS Geography Physical Geography of World
Q.

How much of the Earth’s land surface is desert?
Explanation:

ANS. (C) 
Deserts take up about one third (33%) of the Earth’s land surface. Hot deserts usually have a large diurnal and seasonal temperature range, with high daytime temperatures, and low nighttime temperatures (due to extremely low humidity). In hot deserts the temperature in the daytime can reach 45 °C/113 °F or higher in the summer, and dip to 0 °C/32 °F or lower at nighttime in the winter.

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