Answer:
What kind of room has no doors or windows?
Children keep their assets in this.
Buzzing and bumbling is all we do, we fly from one plant to another and may be noisy, but hey, we are busy making sweet treat that is oh so sugary.
What asks no questions but requires many answers?
Cows do this to salt and humans do it to ice cream.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.