The number of neutrons in an atom is equal to the :
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Ultraviolet radiation in the stratosphere is absorbed by
The method of soil conservation in which bare ground between plants is covered with layer of organic matter like straw is called?
Research designed to evaluate theories is called
Research designed to evaluate theories is called the scientific method.
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Equs Asinus is the scientific name of
Weight of an object on the moon is ............ the weight of the object on earth.
Which of the following causes fly ash?
Which of the following has maximum bio-diversity?