The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?
- (a)It has a high rainfall that supports luxuriant vegetative growth
- (b)It is a confluence of different bio-geographical zones
- (c)Exotic and invasive species have not been introduced in this region
- (d)It has less human interference
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Official answer(b) It is a confluence of different bio-geographical zones