Argon is produced in Earth's crust via?

2025

Argon is produced in Earth's crust via?

  1. A.

    Decay of K-40

  2. B.

    Volcanoes

  3. C.

    Photosynthesis

  4. D.

    Cosmic rays

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Correct answer: A

Most argon produced in Earth's crust comes from radioactive decay of potassium-40.

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