I get wetter the more I dry. What am I?

I follow you wherever you go, but I have no legs. When the sun shines, I grow long, but no one can touch me. Solve the riddle → I am my father's child, but I am not his son. Who am I? Solve the riddle → What gets bigger the more you take away? Solve the riddle → I am transparent and can be both cold and warm. Without me, no one can live. Solve the riddle → I have rings inside and grow taller the older I get. What am I? Solve the riddle →