Nomadic travelers in central and east Asia were able to survive the harsh conditions of the tundras by adapting to the harsh environment that is engulfing the area or region. Also they keep moving with their hut or shelter and also may uses oxen for transportation and carrying logistics.
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False. I think it will be smaller, we are ruining this world with global warming, fossil fuels and etc. New diseases like Zika, are starting, less cures, and some might become deadly.
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Peristalsis is the physical movement or pushing of food along the digestive tract.