Why are rocks from space used to verify Earth's age?

These atoms will decay as the rock ages, and by measuring the ratio of radioactive isotopes within the rock, scientists can figure out how long it has been around. In 1913, geologist Arthur Holmes published “the Age of the Earth,” the first major effort to date the planet using radiometric dating.

answer; ///i believe that the correct answer is refrigerants,(like r12) and aerosol

i think the answer is : the declaration of rights and grievances

hope i

-lavira : )