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The Sahara is the world's largest desert in Africa, the third largest desert on Earth (after Antarctica and the Arctic), with an area of ​​more than 9,000,000 km², approximately the size of the United States and China. Quoc. The Sahara is in northern Africa and is up to 2.5 million years old.

Bounded by the Atlantic Ocean to the West, the Atlas Mountains and the Mediterranean to the North, and the Red Sea and Egypt to the East; Sudan and the Niger River valley in the south. The highest point in the desert is Mount Emi Koussi with an altitude of 3415 m above sea level, in the Tibesti mountain range in northern Chad.

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Sahara Desert is the largest one in the world. It is in North Africa. It extends from Atlantic Ocean eastward past the Red Sea to Iraq. The desert lies largely in Morocco, Algeria, Tunisia, Libya, Egypt, Mauritania, Mali, Niger and Sudan. Its total area is more than 9065000 sq km. It’s 1610 km wide and about 5150 km long from east to west. The land is arid and the climate is dry. It’s very hot in summer and very cold in winter. There’re few oases in the desert. There is sandy land and large dunes of sand. Tableland’s average elevation from 400 to 500 m. There are few form of animals and vegetables life. The main trees are cactus, the date palm, and a form of acacia. Its main animals are gazelle, antelope, fox, jackal and camel.

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The Sahara Desert, the largest desert in the world, is located in the northern Africa and occupied approximately 10 percent of the African continent. From the Atlantic Ocean in the west, the Sahara Desert stretches across Africa to the Red Sea and down to the highlands of Ethiopia, covering an area of 9,100 000 square kilometres, 1,610 kilometres wide and about 5,150 kilometres long from east to west. The Sahara is one of the hottest region in the world, with arid land, and dry climate. In the hottest months, temperatures can rise over 50°c, and temperatures can fall below freezing point in winter. A single daily variation is from -0,5° c to 37,5°c. The Sahara is also extreme windy, which creates dust devils which can make the temperatures even hotter. The surface of the desert ranges from large areas of sand dunes to stone plateaus, gravel plains, dry valleys and salt flats. People can find some tablelands with an average elevation from 400 to 500 metres. Very few forms of animal and vegetable life can be seen in the Sahara. Plants and animals of the Sahara are more threatened by desiccation than the fauna and flora in other parts. The main trees can be seen are cactus, date palm and a form of Acacia. In the vast area of sand and wind, people can find some species of mammals such as desert antelopes, gazelle, fox and jackal. Besides, there are some species of birds and reptiles. The Sahara Desert is not well-protected. Unless people take appropriate measures to preserve, the flora and fauna of the Sahara is critically threatened with extinction.

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Desert, the most draconic place in the world, has some certain features. First of all, Most desert plants are drought or salt-tolerant. Some store water in their leaves, roots, and stems. Other desert plants have long tap roots that penetrate the water table, anchor the soil, and control erosion. Although cacti are often thought of as characteristic desert plants, other types of plants have adapted well to the arid environment. Secondly, When rain falls in deserts, as it occasionally does, it is often with great violence. In spite of so little rain, runoff from ephemeral, or short-lived, streams fed by rain and snow from adjacent highlands provide water for deserts. Another characteristic is that desert animals (and plants) show especially clear evolutionary adaptations for water conservation or heat tolerance and so are often studied in comparative physiology, ecophysiology, and evolutionary physiology. For example, in the first part of the night, as the ground radiates the heat absorbed during the day, lizards emerge and search for prey. Living in a very challenging environment, animals there not only require foods and water, but also need to keep their body temperature at a tolerable level. Many desert reptiles are ambush predators and often bury themselves in the sand, waiting for prey to come within range. All in all, desert seems to be a hard place to live, but many lives including humans are still there, which means that life on earth is really amzing.