The Great Smog of 1952 was a severe air-pollution event which affected _______.
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In terms of size, Neptune ranks no. ___ in our Solar System.
By which process the Chinese Scientists have cloned two identical long - tailed macaques?
A deep crack in a glacier is called
Study of earth is known as
What is the name of ecologically clean rocket developed by Russia based space research center?
Which out of the following is not a launch vehicle of India for placing satellites in the orbit?
The given symbol stands for a/an ___ in an electric circuit.