Uranium is a natural chemical element; but uranium has also and artificial isotopes.
The isotope Am-241 is artificial; infinitesimal quantities of natural americium may exist in uranium ores.
Neptunium is an artificial chemical element. It is found in burned nuclear fuels and in very low concentration in soils as a product of nuclear weapons tests.But natural neptunium exist in infinitesimal amounts in uranium ores.
Radioactive elements both occur in nature (Uranium is the prime example) and are made through the works of man (Plutonium is man-made).
No, i do not think light is anatural source of light.
Manmade actually.
Manmade
Uranium is a very heavy (dense) metal said to have formed in supernovae about 6.6 billion years ago.It is a radioactive element found in many rocks in the Earth's crust.
manmade
Manmade God ended in 2004.
Manmade God was created in 2001.
what are califonia's manmade tourist atraction
people get lun from manmade pond