Answer:
The water cycle...
Step-by-step explanation:
Is the process the universe uses to filter water. Starting with puddels or any water open to the sun, the process of evaporation starts and takes water to the sky while cooling it down to create the clouds we see. Next the clouds hold the water intill the cloud can not hold anymore than the cloud creates parcipation( i dont know how to spell that word sorry...) such as rain, snow, hail, ect. which then goes back on the ground where it runs to lakes and pounds and oceans. The process then repeats it self over and over again.