Which of the following planet is also known as 'Earth's twin'?
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Which is the coldest planet?
In terms of size, Neptune ranks no. ___ in our Solar System.
Psychoanalysis falls under which class of psychological theory
In 2015, underground glaciers of frozen water were discovered on
Ornithophily is effected by
Person who is colour-blind cannot distinguish between
Equus Caballus is the scientific name of _________.