Answer:
Goes over all the hills and hollows. Bites hard, but never swallows.
As destructive as life, As healing as death; An institutioner of strife, Just as prone to bless. It is all that is good, Yet with an evil trend; As it was the beginning of things, It can also be the end.
I have one door and five rooms what am i
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
I am a cave full of bones and the house of a worm.
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?