本题目来源于试卷: Unity and Diversity A.3 Origin of Cells，类别为 IB生物学
[单选题]
Which type of isotopes are commonly used i 2cc i9bt+9yzs3h2dcu n absolute dating of fosf0em1*x+eh/ zg/vef q sils?
A. Stable isotopes
B. Isotopes with short half-lives
C. Isotopes with long half-lives
D. Isotopes with no half-lives
参考答案: C
本题详细解析:
Isotopes with long half-lives (Choice C), such as uranium and pot/ x3o / fxckiora;sc79p0*gyqassium isotopes, are often used in absolute dating because they decay slowly and are suitable fo3 xya rcxpifgo/q/*kc ;79o0s r dating older fossils.
Stable isotopes (Choice A) are not used for fossil dating because they do not undergo radioactive decay. Absolute dating relies on the measurement of the decay of radioactive isotopes into stable daughter isotopes to determine the age of a sample. Isotopes with short half-lives (Choice B) are typically used for dating more recent events, not older fossils. Isotopes with no half-lives (Choice D) cannot be used for fossil dating using the methods based on radioactive decay. Isotopes without half-lives do not undergo radioactive decay, so it is impossible to establish a chronology or estimate the age of a fossil using these isotopes.
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