Answer:
Radioactive dating describes the use of organisms that were alive only during a specific time period to estimate the unknown age of items.
Step-by-step explanation:
Radioactive isotopes are used in radio-active dating. According to the isotope used each dating technique has got different names. In radioactive dating traces of radioactive materials trapped inside rocks and minerals are analysed to determine their ages.
In potassium-argon dating, potassium-40 decays to argon-40. In rubidium-strontium dating , rubidium-87 decays to strontium-87. In carbon dating carbon-14 isotope is used. Uranium-lead dating, samarium-neodymium dating etc are examples of some other dating methods.