Who am I? I am a soft, metallic chemical element found in limestone, chalk, and marble. I am needed for the healthy development of teeth and bones. I am often fortified (added) to foods. I am the most abundant metal by mass in most animals. My name comes from the Latin word "calcis" meaning lime. Who am I? E-mail me the correct answer and its chemical symbol at: dwilliams@reading.k12.ma.us.
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