World War I started in the year?
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Lorenz curve shows
In a market system, the central problems regarding how much and what to produce are solved through the coordination of economic activities brought about by ________ signals.
Acid rain is caused by release of ___ and___ into the air.
'Group of Monuments' at Mahabalipuram one of the 'UNESCO World Heritage Site' founded by the Pallava Kings is in ____ district of ____.
Why do atoms bond?
______ is a strong drug that doctors give to people to make them calm or help them sleep.
For what is Mohs scale used?