Silicon is a naturally-occurring substance.
It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
Silicone is a synthetic material made from silicon, oxygen, carbon, and hydrogen. It is created through a chemical process and does not occur naturally.
Rubber is man-made but has natural agents.
Is limestone natural or man made
It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
The largest catheter ever to be made are the Foley catheter, made from natural or silicone rubber.
natural feature
Is limestone natural or man made
Natural breast tissue is not as heavy as silicone.
Man-made and Natural Resources
it is all natural
Rubber is man-made but has natural agents.
Silicone is a synthetic material made from silicon, oxygen, carbon, and hydrogen. It is created through a chemical process and does not occur naturally.
No "NATURAL" calamities are man made.
Is limestone natural or man made