Question

Sacred groves are specially useful in

Answer 1

Sacred groves of India are forest fragments of varying sizes, which are communally protected, and which usually have a significant religious connotation for the protecting community. ... Other forms of forest usage like honey collection and deadwood collection are sometimes allowed on a sustainable basis.

Answer 2

saving the biodiversity of forest.
As they worship nature as their god so, they do not allow any disturbances in nature and protect the biodiversity.

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