UPSC Civil Services 2011 Prelims General Studies Paper I

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Question : 24 of 100

Marks: +1, -0

The Himalayan range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon ?

It has a high rainfall that supports luxuriant vegetative growth
It is a confluence of different bio-geographical zones.
Exotic and invasive species have not been introduced in this region.
It has less human interference

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