Answer:
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.
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
What goes in the water red, and comes out black?
Some live in me, some live on. And some shave me to stride upon. I rarely leave my native land. Until my death I always stand. High and low I may be found. Both above and below ground.
Sometimes I am white, sometimes I am dark. Most people love me. What am I?