Chemistry, 16.12.2020 14:00, HTTYD

in 4 season countries, the temperatire may drop till below 0°c during the peak of winter. why does the surface of the river or lake freeze?

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Chemistry, 23.06.2019 07:30, jessicawelch25

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in 4 season countries, the temperatire may drop till below 0°c during the peak of winter. why does t...