Answer:
What has 88 keys, but canβt open a single door?
With a halo of water and a tongue of wood; stone as skin long I stood.
I sit high glowing and watch the world go by. Without me everything would seem dull and dangerous. What am I?
After you go through a fall, I will take over. All life will stall, or at least grow slower. What am I?
The dirtier I get, the whiter I am. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.