Rubrica: : SAHARA DESERT The Sahara is the largest non-polar desert in the world. Covering approximately 3.5 million square miles (9,064,958 sq. km), it occupies land pertaining to Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan, and Tunisia. The boundaries of the desert are the Red Sea to the east, the Mediterranean Sea to the north, and the Atlantic Ocean/Atlas Mountains to the west.
Rubrica: : An oasis is a lush green area in the midst of a desert, centered around a natural spring or a well. It is almost a reverse island, in a sense, because it is a tiny area of water surrounded by a sea of sand or rock.
Rubrica: : Turbans are commonly worn in the Horn of Africa by Muslim clerics, as well as Ethiopian Orthodox Christian priests. The headwrap has a long presence in the region, where it was frequently sported by Sultans, Wazirs, and other artistocratic and court officials.
Rubrica: : The Tuareg people are predominantly nomadic people of the sahara desert, mostly in the Northern reaches of Mali near Timbuktu and Kidal but are also indigenous to Morocco.
Rubrica: : They principally inhabit the Sahara in a vast area stretching from far southwestern Libya to southern Algeria, Niger, Mali and Burkina Faso.
Rubrica: : The Tuareg are a nomadic group of people in North and West Africa. Nomadic people (nomads) travel from place to place. In the late 1900s there were about 900,000 Tuareg.
Rubrica: : Camels are even-toed ungulates, meaning ‘hoofed animals’. There are several groups of ungulate mammals whose weight is distributed about equally by the third and fourth toes as they move around. Camels are native to the dry desert areas of western Asia and central and east Asia.
Rubrica: : A Tuareg family dressed in traditional robes in the Sahara Desert. The Tuareg are an Islamic African people. They are classified asseminomadic, meaning that they travel with their herds on a seasonal basis but also have a home area where they grow some food crops.
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NOM-AA-028-1981ANÁLISIS DE AGUA - DETERMINACIÓN DE LA DEMANDA BIOQUÍMICA DE OXÍGENO EN AGUAS NATURALES, RESIDUALES (DBO5) Y RESIDUALES TRATADAS - MÉTODO DE PRUEBA