Answer:
My first is in some but not in all. My second is in tiny 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 may be made of metal, bone, or wood and have many teeth. My bite hurts no one and the ladies love me. What am I?
Fashions change, but what can a person wear that is never out of style?
Though I am dark Adam married me.
I can fall off a building and live but in water I will die.
It's what light turns into in the night