First occur the evaporation.
its evaporate the water
Rain water does evaporate, as seen after storms. If it did not, then we would have no more rain storms, as storm clouds and any other clouds are composed of evaporated/vapor water.
rain water is water that's precipitating from the clouds when it would evaporate then it would precipitate rain water
rain clouds are formed from evaporated water. The more water nearby, the more can evaporate and form clouds.
First the sun evaporates rain/puddles or other liquids, then these liquids and/or dirt particles that were also evaporated condense (condensation) into clouds. After the clouds evaporate enough water condense into a full cloud, depending on the weather it would then precipitate into rain, sleet, snow, or hail. Now for the second question, if the sun didn't evaporate water there would be no water to form rain clouds. If there were no condensation there would be no rain clouds (there would be clouds just not rain clouds) and if there were no precipitation there would be no rain.
there is less water in or on the ground to evaporate and form clouds
The clouds evaporate the water and then when they are too heavy with water it starts to rain.
It must first evaporate and then it must condense into a cloud. As soon as the water droplets get too heavy, then they fall as rain.
the sun evaporate the water only and the salt is left behiend
Clouds don't really collapse but they do 'fall' from the sky as rain. You see clouds are made from water vapour that evaporate from the sea forming clouds and think how do they fall the fall by rain the water vapour creates water droplets and it's too heavy so they fall by rain
Rain would decrease if the oceans died because there wouldn't be enough water to evaporate into clouds.
evaporation changes to water because it goes in the sky or more of the clouds then changes to water or ice as we would call snow or rain. if there is to much water in the clouds both rain and snow will come out at the same time.