They are so unique tot the scientific world because they <span>Petoskey stones are found in the Gravel Point Formation of the Traverse Group. They are fragments of a coral reef that was originally deposited during the Devonian period,,,hope that helped</span>
Each bar or column in a bar graph is of equal width. All bars have a common base. The height of the bar corresponds to the value of the data. The distance between each bar is the same.