Answer:
What can fill a room but takes up no space?
I keep growing and am practically indestructible. I get eaten, but always come back. I survive cold and lie everywhere. You see me everyday. 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. What am I?
What has a face and two hands but no arms or legs?
What has many keys but can't open a single lock?
Give it food and it will live, give it water and it will die.