Question 10 • CV Q4 M/J Science 3 Adv 2002110 Compacted Review of Grade.7.Life for SSA Prep
Potassium-40 is radioactive and decays into argon-40, which is stable. Measuring the amounts of these elements in suitable rock associated with a fossil can help determine ages over a billion years. Therefore, potassium and argon are the correct pair.
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