Homo ergaster may have been the first human species to leave Africa and fossil remains show this species had expanded its range into southern Eurasia by 1.75 million years ago. Their descendents, Homo erectus, then spread eastward and were established in South East Asia by at least 1.6 million years ago.Oct 30, 2015
<span> </span><span>socialist market economy
communist party
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The answer is D) The crust, because it is the only solid outer layer, and it is the only layer that is separated into plates.
Troposphere, Stratosphere, Mesosphere, and Thermosphere. The stratosphere contains the ozone layer. The thermosphere is the hottest layer and he mesosphere is the coldest layer
