Asked by idk

Earth's Formation Quick Check
Answered by Anonymous
Which allowed scientists to determine that Earth was at least 4.3 billion years old?(1 point)
Responses

the electrical conductivity of uranium ions
the electrical conductivity of uranium ions

magnetic field surrounding zircon
magnetic field surrounding zircon

chemical reactivity of zircon ions
chemical reactivity of zircon ions

the radioactive decay of uranium to lead
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