Answer:
Many foods can make me strong but give me water and I won't last long.
What runs around the whole yard without moving?
No matter how little or how much you use me, you change me every month. What am I?
What devours all and can kill a king. Destroy a town and crushes mountains down?
One am I, among six others: Largest, smallest, cold, dark and two brothers
Cycle Cycle Cycle.