How Can Radiometric Dating Yield Reliable Values for the Ages

question 69

Multiple Choice

How can radiometric dating yield reliable values for the ages of minerals, rocks and some fossils?

• A)The decay constants are fixed and well measured for isotopic decay.
• B)One only needs to analyse for the parent isotope.
• C)The physical conditions that control decay, like temperature and pressure, are always well known.
• D)There are absolute fossil ages to compare to and test the radiometric clocks.

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