EXAMIANS
In a volume of air near the earth's surface, ____ occupies 78 percent and ____ nearly 21 percent.
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A great deal of indoor air pollution comes from
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An ecosystem gradually merges with an adjoining one through a transitional zone is called the ______________
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Which among the following is related to the word Mesoderm ?
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The presence of solid, liquid or gaseous compounds, which may not be normally present, or in excess concentration in the atmosphere is called
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Heat transferred outward from the surface of the moon can take place by:
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Many freshwater animals cannot live for long in sea water and vice versa mainly because of the
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Phytoplankton are
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Which of the following is a biodiversity hot spots in India?
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The blueness of the sky is mainly due to:
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