Which one of the following bio reserves of India is not included in the World Network of Biosphere Reserve?
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___________ is obtained by evaporation of sea.
Polio is a disease caused by which of the following?
An _______________ is a sudden shaking or trembling of the earth.
In 1981, ISRO launched India's first geostationary satellite called -
The radius of curvature of a concave mirror is 30 cm. Following Cartesian Sign Convention, its focal length is expressed as
Black soil is also known by which of the following name ?
Find the missing number?