Radon.
radon
In some places Yes. Radon is a colourless, odourless radioactive gas formed by the radioactive decay of the small amounts of uranium that occur naturally in all rocks and soils. Therefore it is fair to assume its in most places worldwide
It starts out that way.It became radioactive when it was produced in an ancient supernova explosion, long before earth formed. Supernova explosions are responsible for producing all elements heavier than nickel and iron (radioactive or not), the heaviest elements that can be formed by nuclear fusion.
A landform is naturally formed feature on earth's surface.
cavern Answer #2: A sinkhole.cavern
radon
Radon.
It is radon that we see formed from the decay of naturally radioactive substances in the earth's crust.
You measure the amount of radioactive decay that is present in certain elements that were present when the rock formed from melt.
A diamond is a metamorphic rock formed from carbon. Diamond formation requires intense heat and extreme pressure, which naturally occurs deep underground.
The gaseous element "radon".
A cavern is an underground chamber formed by erosion
In some places Yes. Radon is a colourless, odourless radioactive gas formed by the radioactive decay of the small amounts of uranium that occur naturally in all rocks and soils. Therefore it is fair to assume its in most places worldwide
It starts out that way.It became radioactive when it was produced in an ancient supernova explosion, long before earth formed. Supernova explosions are responsible for producing all elements heavier than nickel and iron (radioactive or not), the heaviest elements that can be formed by nuclear fusion.
No. Granite is an igenous rock that is formed underground.
Yes. Granite is formed underground from solidifying felsic magma.
Name a feature that is formed by underground erosion