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How Whats App Works With The Other Facebook Companies. Whats App works and shares information with the other Facebook Companies to receive services like infrastructure, technology, and systems that help us provide and improve Whats App and to keep Whats App and the Facebook Companies safe and secure.When we receive services from the Facebook Companies, the information we share with them is used to help Whats App in accordance with our instructions.Below is a chart of commonly used radiometric isotopes, their half-lives, and the daughter isotopes they decay into.Let's say you found a fossil you think to be a human skeleton.One way that helps scientists place fossils into the correct era on the geologic time scale is by using radiometric dating.Also called absolute dating, scientists use the decay of radioactive elements within the fossils or the rocks around the fossils to determine the age of the organism that was preserved.This technique relies on the property of half-life.
By measuring the ratio of the amount of the original radioactive element to the daughter isotope, scientists can determine how many half-lives the element has undergone and from there can figure out the absolute age of the sample.This is what your readout said, so your fossil has undergone two half-lives.Now that you know how many half-lives have passed for your fossil, you need to multiply your number of half-lives by how many years are in one half-life. Your fossil is of an organism (maybe human) that died 11,460 years ago.After two half-lives, another half of your leftover Carbon-14 would have decayed into Nitrogen-14.Half of 50% is 25%, so you would have 25% Carbon-14 and 75% Nitrogen-14.