Answer:
What force and strength cannot get through, I with my unique teeth can do. What am I?
Travel a mile and I will change, travel a million and I will end as I started. What am I?
Though I am dark Adam married me.
Long and thin red within with a nail at the end.
Iām found in your socks, scarves, and mittens; and often in the paws of playful kittens. What am I?
No matter how little or how much you use me, you change me every month.