Answer:
Soldiers fight it but never changes.
What is all over a house?
Lots of them make up a word, And lots of words are in them. It's easy when you think about it. A while ago we stamped and mailed them.
What freezes after it is heated up?
They are Dark, and always on the run. without the sun, would be none!
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?