Answer:
What has many keys but cannot open a single lock or door?
What's that 7 letter word with thousands of letters in it?
I cannot be felt, seen or touched; Yet I can be found in everybody; My existence is always in debate; Yet there is a style of music named after me.
Humans have two that shrink in the light and expand in the dark
What is in seasons, seconds, centuries, and minutes, but not in decades, years, or days?
What did the piece of wood say when he saw the screwdriver and screws approaching?