Answer:
Rotten trees and Jack-O-Lanterns have this characteristic in common.
I start in little but I end in full, you'll find me in half and complete.
One am I, among six others: Largest, smallest, cold, dark and two brothers
No matter how little or how much you use me, you change me every month. What am I?
Chicken noodle and cream of mushroom are two well known varieties of this kind of food
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?