Here is an incomplete version of the carbon cycle. http://www.youtube.com/watch?v=dDBU0lg-HYE What does the video skip over? A type of rock. Limestone. What is limestone? Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It most commonly forms in clear, warm, shallow marine waters. It is usually... Continue Reading →
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