Question

Which allowed scientists to determine that Earth was at least 4.3 billion years old?(1 point) Responses the radioactive decay of uranium to lead the radioactive decay of uranium to lead the electrical conductivity of uranium ions the electrical conductivity of uranium ions chemical reactivity of zircon ions chemical reactivity of zircon ions magnetic field surrounding zircon

Answer 1

[AI-generated answer — Bot GPT 3.5]

The correct answer is: the radioactive decay of uranium to lead.