Climate change has become a buzz word throughout the world. In case of the Himalayas the best way to infer whether there is a climate change or not is to :

(I) Monitor tree line

(II) Monitor migration of glaciers

(III) Study alteration in species composition

A (I) only

B (I) and (II) only

C (II) only

D (I), (II) and (III)

Answer & Explanation
Answer:(I), (II) and (III)

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