B. Deep currents are driven by density differences, while surface currents are driven by wind and Earth's rotation.
Yes they are all planted using seeds . Flax seeds, barely seeds, and wheat seeds.
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.
Hope this helps :))
