1) the cool molecules of ice berg change into fog to get equilibrium state.

2)the clouds takes place in mountain peaks the clouds are formed by the water vapour the clouds are has high pressure and high temperature . the mountain peaks are in low pressure and cold temperature . so to gets thermal equilibrium between clouds and mountain peaks place they take place in mountain peaks.
3)the vapour which --------------------------------------
4) because of saturated vapour present in the bubbles .
1 5 1