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Deserts are extensive arid areas characterized by low rainfall and scarcity of food resources, but they are not always hot. Even so, they are not entirely devoid of fauna and flora, and some even include cities in their landscapes. The largest desert in the world is Antarctica, due to its very low temperatures, high altitudes and the fact that water evaporates more than what is replaced by the scarce rain. The word "desert" comes from the Latin "desertu", which means uninhabited, lonely or emptied, and are formed due to the lack of rain in these regions.
