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Central and northern asia

Back to Central and Northern Asia: 5000 to 3000 B.C.

Throughout the fifteen hundred years covered in this chapter, the Iranian (Indo-European) tribes slowly expanded in all directions, including various salients across southern Asia both east and north. By 2,500 B.C. the hunting economies had begun to give way to herding and agriculture in Kazakhistan and central Siberia. Horse drawn carts were in use in Turkistan by the same date. The pottery of all these people showed affinities to the Middle East. It was the domestication of the horse which allowed them to spread and penetrate in all directions.

In the far northeast of Asia, the Mongol peoples continued their own development, probably more closely related to the Chinese culture than to the Indo-European development. In the area which now comprises the western Chinese provinces of Kansu and Sinkiang, but which geographically are more a part of central Asia, the Pan-Chan phase of the Yang-shao Culture appeared about 2,500 B.C. with large urns painted in spirals with purple, brown, red and black. By 1,500 B.C. this gave way to the Hsien-tien Culture which included farming and the use of hand-made pottery and copper tools. Farther northwest, in the Yenisei Valley, the Afanasieve Culture with stock breeders and hunters, stamped pottery, and copper ornaments have been dated to this 3rd millennium. By 1,500 B.C. the Androvonovo Culture existed between the Don and the Yenisei rivers, with small settlements of up to ten semi-subterranean houses. These individuals, who were the ancestors of the later nomads of the central Asiatic steppes, grew wheat and millet and bred live-stock at that time. (Ref. 136 , 8 , 45 , 213 )

Forward to Central and Northern Asia: 1500 to 1000 B.C.

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Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
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Examples of thermophilic organisms
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Give Examples of thermophilic organisms
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Prevent foreign microbes to the host
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they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
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cell is the smallest unit of life
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cell is the structural and functional unit of life
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is the fundamental units of Life
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There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
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Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
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part of a tissue or an organ being wounded or bruised.
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Binomial nomenclature
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Source:  OpenStax, A comprehensive outline of world history (organized by region). OpenStax CNX. Nov 23, 2009 Download for free at http://cnx.org/content/col10597/1.2
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