How do the clouds purify the sea salt into rain?

When sea water (e.g from big waves in the deep ocean) is blown into the air, some of the sea water will evaporate and the some of the salt contained in it will remain suspended in the air as tiny particles. read more

D2O omission higher, therefore there will be less Deuterium in clouds and rain. This effect can sometimes be used to establish, amongst other isotope differences, if a compound is natural in origin or created through chemistry. read more

The water comes out of the cloud and because just fresh water went up into the air, there's only fresh water to come back out of the cloud, and as a consequence, you get fresh rain. read more