Something that is not naturally occurring is man made.
Phosphorus is naturally occurring. It is found in rocks
Thallium is a naturally occurring element in the Earth's crust. It is not a man-made element.
Potassium-42 is a naturally occurring isotope of potassium. It is a radioisotope with a half-life of about 12.4 hours.
Carbon has a few isotopes. The most common naturally occurring isotope of it is C12. Mass number of it is 12.
The lightest naturally occurring actinide on Earth is thorium, which has the atomic number 90. It is a naturally occurring radioactive element found in small amounts in soil and rocks.
appy is the naturally occurring base.
naturally occurring.
Yes it is a naturally occurring mineral.
The "Chaparral Biome" is characterized by naturally occurring fires.
No - it's a man-made object. But the stuff it is made from is naturally occurring.
Naturally occurring means that the substance is natural and is not in any way made by mankind.
The opposite of naturally occurring would be artificially created or man-made.
Phosphorus is naturally occurring. It is found in rocks
No - it's a man-made object. But the stuff it is made from is naturally occurring.
Naturally occurring pollutants include those omitted by volcanoes and forest fires.
Not all the elements occur naturally; some elements are man-made.
appy is the naturally occurring base.