Question

Life can exist under frozen surfaces in polar seas because…

Answer 1

Answer:

Life exit under frozen surfaces in polar seas because of the anomalous behavior of water.

Explanation:

Water behaves irregularly, which helps in preventing the total freezing of seas during winter.

Since water has its highest density at $4^{o}$C, the surface of seas freezes while the lower regions or layers is in form of liquid. During winter, as the temperature decreases to $4^{o}$C, the layer of water with highest density sinks to the bottom while those that are less dense floats to the top. Thus when the surface temperature is below $0^{o}$, the lower layers under the frozen surface are at temperature range between $1^{o}$C to $4^{o}$C