Answer:
What pulls you down and never lets go?
Many foods can make me strong but give me water and I won't last long.
As strong as love, more dangerous than cancer.
You can tumble in it, Roll in it, Burn it, Animals eat it, Used to cover floors, Still used beyond stall doors. Freshens whatever it is placed on, Absorbs whatever is poured into it. What is it?
I have eighty-eight keys but cannot open a single door? What am I?
What is always coming but never arrives?