Sarin is a chemical.and it is man-made.
Sarin is a chemical.and it is man-made.
Sarin is a chemical.and it is man-made.
Sarin is a chemical.and it is man-made.
Sarin
Sarin
It is natural but there are man-made imitations.
It can be made from natural or man made fibres.
Is limestone natural or man made
natural feature
Man-made and Natural Resources
No "NATURAL" calamities are man made.
Is limestone natural or man made