No.
Diphtheria is a disease caused by a bacteria. It is entirely natural, unfortunately.
No.
No. It's man-made.
It is a man-made material.
Nylon.
Patients who are sensitive (about 10%) must be desensitized with diluted antitoxin, since the antitoxin is the only specific substance that will counteract diphtheria exotoxin. No human antitoxin is available for the treatment of diphtheria.
It's a natural substance
It's a natural substance
Yes, Teflon is a man-made synthetic substance. It is a type of polymer known for its non-stick properties and is commonly used in kitchen cookware and as a coating for fabrics.
No, aspartame is a man-made substance for which the maker has a patent.
Yes, stone is a natural substance, not man-made.
Concrete is a man-made substance, and is therefore only found in sidewalks, buildings, and other man-made items.