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Water is an essential natural resource for human and living organisms. We use water for various purposes like drinking, cleaning, agriculture practices, transportation, etc. It is the prime resource for the
hydel power station, providing electricity for domestic, industrial and commercial purposes. Among the northeastern states, Arunachal Pradesh is endowed with vast natural resources because of its geographical location and climatic variation. The state has 26 major tribes and over
110 sub-tribes whose lifestyle totally depends on natural resources. (Correspondence)