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Some issues that is caused with Pastoral Nomadism is that they are always moving and may need to move for days in order to find the perfect spot. It is difficult to large families who need to take care of small children

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Nomads select the type and number of animals for the herd according to local cultural and physical characteristics. Some animals are better in some locations than others. The choice depends on the relative prestige of animals and the ability of species to adapt to a particular climate and vegetation.

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Some nomads might hire workers to practice sedentary agriculture in return for grain and protection. Other nomads might sow grain in recently flooded areas and return later in the year to harvest the crop. Some will even remain in one place and cultivate the land when rainfall is abundant; then, during periods of dry land, the group will increase the size of the herd and migrate in search of food and water.

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Although they have many different animals, their animals are usually not slaughtered, although dead ones may be consumed. They use their animals for products such as milk, cheese, and sometimes their fur.

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Pastoral nomads do not wander randomly across the landscape but have a strong sense of territoriality. Every group controls a piece of territory and will invade another group's territory only in an emergency or if war is declared.

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Many present-day nomads do raise crops but others get it by trading with sedentary subsistence farmers in exchange for animal products.

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The minimum number of animals necessary to support each family adequately varies according to the particular group and animal. The typical nomadic family needs 25 to 60 goats or sheep or 10 to 25 camels.

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- livestock are constantly herded in order to find fresh pastures to graze on

What kind of livestock?
- cattle, yaks, sheep, goats, horses, donkeys, camels

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Bedouins of Saudi Arabia and North Africa and the  Masai of East Africa are examples of nomadic groups. There is only about 15 million people who are pastoral nomads, but occupy about 20 percent of Earth's land area.

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it's a form of subsistence agriculture based on the herding of domesticated animals

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It is adapted to dry climates, where planting crops is impossible. They live  primarily in the large belt of arid and semiarid land that includes Central and Southwest Asia and North Africa.