Sex date belgium - Dating the age of the earth
Ages of millions of years are all calculated by assuming the rates of change of processes in the past were the same as we observe today—called the principle of uniformitarianism.
The half-life is the amount of time it takes for one half of the initial amount of the parent, radioactive isotope, to decay to the daughter isotope.
Thus, if we start out with 1 gram of the parent isotope, after the passage of 1 half-life there will be 0.5 gram of the parent isotope left.
Sooner or later that supposed evidence will be turned on its head and will even be added to this list of evidences for a younger age of the earth.
On the other hand, some of the evidences listed here might turn out to be ill-founded with further research and will need to be modified.
There is no independent natural clock against which those assumptions can be tested.