Periyar Tiger Reserve is in which state?
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Which of the following vitamins contain nitrogen?
Insects that transmit diseases are known as
Kyoto Protocol is associated with
Which among the following is not an instrument of fiscal policy?
In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
At somebody's expense
The source of energy in an ecosystem is
_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.