It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
Rubber is man-made but has natural agents.
Is limestone natural or man made
Coal is a natural mineral. You might be confusing this with charcoal which is man-made.
It is natural but there are man-made imitations.
Fiberglass is made from sand and other natural minerals, and then coated in resin or plastic. It has many different uses and is considered to be very strong.
It can be made from natural or man made fibres.
natural feature
Is limestone natural or man made
Man-made and Natural Resources
it is all natural
Rubber is man-made but has natural agents.
No "NATURAL" calamities are man made.
Is limestone natural or man made
Ceramic is man-made from a natural material.
some is natural but some is man made