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How Do Oases Occur In Desert?

How Do Oases Occur

Oases are fertile areas in the deserts where the water is stored underneath the surface. Sand is very porous, so when it rains most of the water runs right through the sand and goes down to the bedrock, usually several hundred feet below the surface. There are also river water oases, for example, the one along the river Nile in Egypt. Earlier the oases were important trading places for passing caravans. The conventional oasis economy provided cereals, pomegranates, and figs as well as dates that grew on the high palm trees. But now the oasis products are no longer in demand because of the globalization. The oases are now being abandoned , and are gradually drying up.