3/3/2024 0 Comments Half life of carbon 14![]() On the other hand, carbon-14 is radioactive and decays into nitrogen-14 over time. The most abundant, carbon-12, remains stable in the atmosphere. ![]() Humans and other animals ingest the carbon through plant-based foods or by eating other animals that eat plants. While plants are alive, they take in carbon through photosynthesis. And with the help of radiocarbon dating, researchers can use that decay as a kind of clock that allows them to peer into the past and determine absolute dates for everything from wood to food, pollen, poop, and even dead animals and humans. Over time, carbon-14 decays in predictable ways. ![]() Nothing good can last-and in the case of carbon-14, a radioactive isotope found in Earth’s atmosphere, that’s great news for archaeologists.
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