Answer:
What I am filled, I can point the way. When I am empty. Nothing moves me. I have two skins. One without and one within.
It's in your hand though you can not feel it. Only you and time can reveal it.
It happens when something has been cut with H2O.
Green arrows grow out of my sides. I go from yellow to white. My babies fly in the wind. What am I?
My first is in some but not in all. My second is into but not in tall. My third in little but no in big. My fourth in port but not in pig. My whole is made in nature's way. For clothing, rugs used every day.
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?