Answer:
One by one we fall from heaven down into the depths of past, And our world is ever upturned so that yet some time we’ll last.
Vikings use this for warmth.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
What is the freedom of birds and the pen of old men?
What is often returned, but never borrowed/
Why did Superman flush the toilet?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?