Warm air is ______.
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Many freshwater animals cannot live for long in sea water and vice versa because of the _______ problems, they would face.
The northwest ordinance of 1787 provided for the
The Nobel Peace Prize 2016 has been awarded to ______ .
Term ecosystem was coined by
During the Middle Ages education was confined only to:-
During the Middle Ages education was confined only to Brahmins.
Which of the following elements has the lowest melting point?
Which element is not a part of a nitrogenous base?