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Question
The surface of water in a pond remains cool even on a hot day because
Options:
A .  water evaporates at the surface and evaporation causes cooling
B .  the heat absorbed at the surface is transmitted downwards
C .  water in a contact with the bottom of the pond becomes cool and rises to the surface due to convention
D .  none of these
Answer: Option A
:
A
Option:(a)

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