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YouTubeProfessor Dave Explains
Radiometric Dating: Carbon-14 and Uranium-238
When you read about the ages of certain ancient artifacts, or even the age of the earth itself, how do we know such numbers? How can we know that a fossil is precisely 250 million years old? The key technique here is radiometric dating. This is where we use our understanding of radioactive decay to measure the age of an object. How does this ...
275.3K viewsAug 9, 2019
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🚨 ¿NO PUEDES RESPIRAR por la nariz? 👃💥 Sinusitis, rinitis, congestión, mocos pegados… ⚠️ Tu nariz puede estar llena de mucosidad acumulada y bacterias. 😳 Y mientras sigues usando gotas todos los días… el problema vuelve una y otra vez. 🌿 Pero existe un remedio casero que muchas personas usan para ayudar a limpiar la nariz de forma natural. 📌 NECESITAS: 🌻 1 cucharadita de aceite de girasol 🧂 1 cucharadita de bicarbonato 🍯 1 cucharadita de miel ➡️ Mezcla todo hasta formar una pasta homogé
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