📅 NSB Round Robin 2020🎓 HS🔄 Round 4#️⃣ Question 14🌟 BONUS✍️ Short Answer
Identify all of the following three radioisotopes that can be used to date materials that are older than 1 billion years: 1) Potassium-40; 2) Carbon-14; 3) Uranium-238.
✔️Answer:1, 3
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