Which one of the following bio reserves of India is not included in the World Network of Biosphere Reserve?
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The tree species most commonly used in social forestry is
Which among the following is the major cause of acid rain?
___________ is obtained by evaporation of sea.
Concentration of water vapour in troposphere is
______ is the time taken by the earth to return to a given point in its orbit with reference to a fixed star.
Which of the following minerals is not found in the plateau regions?
What is Syzygy?