is the rain the ultimate source of water?
@ Rahul : No, rain is not the ultimate source of water. The ultimate source of water are the water bodies which are present on earth which includes large oceans, seas, rivers etc. Rain is only the way of water returning to their sources which they have lost by evaporation. The rain is caused by condensation of water vapors present in the atmosphere. These water vapors comes from evaporation of water from the various water bodies, which are the ultimate source of water. If there would have been no water in these water bodies, there would have been no rains.