Volcanologist specialize in the study of Volcanos.
Seismologists specialize in the study of siesmic waves .
Explanation:
A warm front is indicated on the line by red semi-circles pointing away from the warmer air and pointing in the direction towards which the warm air is moving. Along sections of the polar front, cold and warm air masses may move differentially with for one another.
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 :))
1. A <em>population density</em>
2. B <em>underpopulation</em>
3. A <em>overpopulation</em>
