Answer:
I am the minerals vital for your good health.
I take off my clothes when you put on your clothes. I put on my clothes when you take off your clothes. What am I?
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
I can bring tears to your eyes; resurrect the dead, make you smile, and reverse time. I form in an instant, but I last a life time. What am I?
The dirtier I get, the whiter I am. What am I?
They're actually great swimmers now, but later they will become excellent hoppers.