During severe winter the surface of the lake freezes, but the water at – McqOptions

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1.	During severe winter the surface of the lake freezes, but the water at its bottom remains in a liquid state. For what reason does this happen?
A.	ice is a bad conductor of heat
B.	There is no heat loss due to the same temperature of the surface of the lake and the air
C.	The concentration of water is maximum at 4 °C.
D.	neither of the above
Answer» B. There is no heat loss due to the same temperature of the surface of the lake and the air

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