Modern Marvels: Salt Worksheet Movie Summary: It’s the only rock we eat, and we need it to live. History has shown that those who have salt rule the world–and today, this versatile substance has 14,000 known uses. Travel to a salt mine 1,800 feet below Lake Erie where workers blast salt... (more details for Modern Marvels: Salt*)

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File #2286 Info: Created by Kendon Smith on February 21, 2013 using Michigan State standards for students at a grade 9-10 level.

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