_____________ is the number of deaths in the population during a given period.
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Malachite is an ore/mineral of
An _______________ is a sudden shaking or trembling of the earth.
In 1981, ISRO launched India's first geostationary satellite called -
Study of earth is known as
Chlorophyll was first isolated and named by
Which among the following is the major cause of acid rain?
What is Syzygy?