It is manufactured.
s
manmade, manufactured, artificail
Ammonia does occur naturally, but it is manufactured on an industrial scale.
The isotopes are not manufactured for specific uses, they occur in nature naturally.
Yes. Mostly by wind, water and ice.
All existing products which do not occur naturally are manufactured. This includes items as diverse as computers, phones, toys, clothing, cars, musical instruments, and everything else which does not occur in nature.
Sublimation occurs naturally on Earth. Snow and ice can sublimate slowly in hot sun.
Dry ice (frozen or solid carbon dioxide) is found on the moons of Saturn and Jupiter.It is also a component of most comets.
It DOES occur naturally. It is an ore. It is not man made.
Thallium, discovered in 1861, does occur naturally, but not in its pure form.
LSD does not naturally occur. The things that would destroy manufactured LSD would happen regardless of whether it coats food.
Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.Rivers are not built, they occur naturally, so there is no year that the river Lee was built.