Potassium is naturally made
Not all the elements occur naturally; some elements are man-made.
Silicon is a naturally-occurring substance.
Metal that is a naturally occurring element.
Iodine is a naturally occurring element.
Gasoline is a fuel that is man-made by refining the naturally occurring crude oil.
Something that is not naturally occurring is man made.
naturally occurring.
No - it's a man-made object. But the stuff it is made from is naturally occurring.
No - it's a man-made object. But the stuff it is made from is naturally occurring.
Phosphorus is naturally occurring. It is found in rocks
No. It's man-made.
No, it is a naturally occurring element.
Naturally occuring.
Not all the elements occur naturally; some elements are man-made.
elvis odonald
No, they are a naturally occurring weather system.
Iron is an ore.