Genetic studies, in recent years, have traced the origins of the majority of population groups in the Indian sub-continent to two ancestral populations– Ancestral North Indian and Ancestral South Indian. At the same time, it is seen that the sizeable population group of Mundas in central and northeast India shares genetic ancestry with Southeast Asian populations as well
The excessive amounts of human waste and toxic effluents that find their way into the Ganga river are not only polluting the water but also causing a deficit of dissolved oxygen in the riverbeds in some of the most polluted stretches of the river, a new study has found
Degrading air quality in metro cities is a matter of concern for public health. Massive tree plantation drives are often conducted in order to provide oxygen to choking cities.
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