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What is a rare earth element in the lanthenide series?
Promethium is the rarest naturally occurring rare earth element in the lanthanide series. It is radioactive and not found in significant quantities in the Earth's crust, making it one of the least abundant elements on Earth.
Is ytterbium natural or man made?
Ytterbium is a naturally occuring rare earth element. However, an isotope of Ytterbium (Ytterbium-169) is an artificially produced isotope.
What bio-me is characterized by regular naturally occurring fires?
The "Chaparral Biome" is characterized by naturally occurring fires.
What is the opposite to naturally occurring?
The opposite of naturally occurring would be artificially created or man-made.
Are all the elements naturally occurring manmade or both?
Not all the elements occur naturally; some elements are man-made.
What is a naturally occurring base?
appy is the naturally occurring base.
Is tungsten naturally occurring or man-made?
naturally occurring.
Is naturally occurring a topaz?
Yes it is a naturally occurring mineral.
What is a rare earth element in the lanthenide series?
Promethium is the rarest naturally occurring rare earth element in the lanthanide series. It is radioactive and not found in significant quantities in the Earth's crust, making it one of the least abundant elements on Earth.
Is ytterbium natural or man made?
Ytterbium is a naturally occuring rare earth element. However, an isotope of Ytterbium (Ytterbium-169) is an artificially produced isotope.
What bio-me is characterized by regular naturally occurring fires?
The "Chaparral Biome" is characterized by naturally occurring fires.
Is cardboard a naturally occurring?
No - it's a man-made object. But the stuff it is made from is naturally occurring.
What is naturally-occurring?
Naturally occurring means that the substance is natural and is not in any way made by mankind.
What is the opposite to naturally occurring?
The opposite of naturally occurring would be artificially created or man-made.
Is phosphorus a naturally occurring or man made?
Phosphorus is naturally occurring. It is found in rocks
Is a cardboard box naturally occurring?
No - it's a man-made object. But the stuff it is made from is naturally occurring.
Which is naturally occurring pollutant?
Naturally occurring pollutants include those omitted by volcanoes and forest fires.
