Answer:
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
What can run but can’t walk?
What goes through a door but never goes in. And never comes out?
What word is a plural, but when you add an "S" to the end, it becomes singular?
Without this, eating food and Steven Spielberg's career would be very different.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?