📅 NSB 2011 Set 4🎓 HS🔄 Round 16#️⃣ Question 24🌟 Bonus✍️ Short Answer
Earth's core is kept hot by the radioactive decay of several radioactive substances, including Uranium-235 and 238; name the other two heat-producing isotopes which are also significant contributors to the radioactive heat production of the Earth.
✔️Answer:POTASSIUM-40 AND THORIUM-232
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