Many fish thrive in Antarctic water, where the temperature is always below zero. How do they manage to keep their body fluids uneffected from freezing ?

A : Antarctic fishes have blubber to withstand sub zero temperatures. R: Blubber are proteins which allow the freezing of body fluids.

An ice cube whose mass is 50 g is taken from a refrigerator where its temperature was -10^@C . If no heat is gained or lost from outside, how much water will freeze onto the cube if it is dropped into a beaker containing water at 0^@C ? Latent heat of fusion =80 kcal//kg , specific heat capacity of ice =500 cal//kg//K .

Fill in the blanks : Antarctic fish (Trematomus ) can tolerate below 0^(@)C temperature by accumulating ……….. or ……… that lower freezing point of their body fluids .