Öken

=The Sahara Desert= = = =The Sahara desert is the worlds second largest desert and its 9 065 000 square kilometers big. Its as big as Europe or USA. It covers most of Northern Africa. The sand dunes in the Sahara desert can reach 180 meters in height. Over 30 000 petroglyphs with pictures of animals such as crocodiles has been found in the Sahara desert. Now, there is about 2,5 millions of people in the Sahara desert. In Sahara, there rain under 30 mm and there could rain twice in one week but not return in years. There is big differences in the temperature between summer and winter. On the summer, the temperature can reach 50 degrees Celsius and on the winter, the temperature can drop down to 0 degrees Celsius. Its dryness and not heat that makes Sahara a desert and Antarctic is so dry that scientists thinks that it is a desert too. In Sahara, you can walk without water in only four hours. There is many natrual resourses in the Sahara desert such as iron, copper ore and tin but its hard to get =

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