estimate+relatively
131Radiometric dating — (often called radioactive dating) is a technique used to date materials such as rocks, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.[1]… …
132Somalia — Somali Republic Jamhuuriyadda Soomaaliya جمهورية الصومال Jumhūriyyat as Sūmāl …
