Which of the following represents the most complex trophic level?
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In _____________ motion of a body its velocity varies with time.
By which process substance like carbon dioxide or oxygen can move across the cell membrane?
Which of the following is an unsaturated Hydrocarbon?
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
If tan a = √3 + 2, then the value of tan a - cot a is
cos(A+B) + cos(A-B) is equal to
Which of the following languages has been used by Surdas in his writings?