The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.
Radium.
Source of heat in mantle come from radioactive decay of the radioactive elements inside the earth..
Earth has internal energy due to radioactivity. I am not sure what you mean by radioactive external energy, or simply by external energy. Earth gets most of its energy from the Sun.
20 percent of the earth
Radium is the radioactive metal among alkaline earth metals.
The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.
The core of the earth is radioactive, as is the sun. Granites, which crystallize from mantle material are commonly slightly radioactive.
The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.
Americium can be a radioactive contaminant of the earth.
of course
Radium.
The heat that drives mantle convection comes from the colling of Earth's interior and the decay of radioactive isotopes
Source of heat in mantle come from radioactive decay of the radioactive elements inside the earth..
it can kill the earth and even us if there is to much
Radioactive Decay
Underground - from radioactive decay.