<span>South Asia is the region in Asia located south of the Himalayan Mountains and east of the Caspian Sea. India is the largest country in the South Asia region and experiences several climate regions. South Asia experiences all four seasons: spring runs from December to February, summer from March to May, Autumn from June to August, and winter from September to November.</span>
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The specialization of work is as old as the first human groupings, and it was through division by sex. The invention of the wheel dates from at least 2000 years before Christ, and can be extended up to 3,500 years if we take into account the first illustrations of a wheel. The controlled use of fire, in turn, dates back more than a million years, while the development of agriculture is about 10,000 years old. Thus, among the discoveries and inventions pointed out. It is worth noting, however, that the invention of the wheel, while important, would not contribute to such a large population growth.
Agriculture (letter d), gradually improved from 5,000 BC, is the fundamental factor for population growth, which could now settle, rather than live as a nomad.
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Answer:
a) are the sources of long-period comets.