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Q: Rust forms when _____ reacts with chemicals in rocks.

  • 1
    Water
  • 2
    Oxygen
  • 3
    Nitrogen
  • 4
    Carbondioxide
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Answer : 2. "Oxygen"
Explanation :

Answer: B) Oxygen Explanation: Rust forms when oxygen reacts with chemicals in rocks, and that is often the case with many other elements in general. Like a copper nail being exposed to the air will rust.

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