Question

In winter, water tank (or ocean) starts freezing
from the surface and not from the bottom.​

Answer 1

Answer:

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Explanation:

. The density of the water is highest at 4oC. So the at winter the water having temperature 4oC goes to the bottom of the tank and the water having less temperature will be at the surface. Hence the freezing starts at the surface

Answer 2

Answer:

Because the top surface is exposed to the coldness more than the bottom part of the water body. And please mark me as brainliest.