Kailash Satyarthi won Nobel Prize for?
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Algae belongs to which of the following levels of the ecosystem?
In which of the following the dominant phase is Gametophyte?
Ammonium nitrate, on thermal decomposition, produces :
Which of the following gases is liberated when Sodium Hydrogen Carbonate is heated?
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
The metal that can be cut with a knife is
Which of the following plants have root nodules?