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      Question

      What is the primary component of an

      eggshell?
      A CaCO₃ Correct Answer Incorrect Answer
      B MgCO₃ Correct Answer Incorrect Answer
      C MgSOâ‚„ Correct Answer Incorrect Answer
      D NH₃ Correct Answer Incorrect Answer

      Solution

      Eggshells are primarily composed of calcium carbonate (CaCO₃), which gives them their hardness. The shell is porous, allowing gas exchange while protecting the developing embryo.

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