Figure 1 shows the abundance of elements in Earth’s crust.
Figure 1. The Elite Eight Elements. The elements are listed along the x-axis and the percentage is on the y-axis. All numbers are approximate. Oxygen is just below 50 percent; silicon is just about 25 percent. Calcium is 5 percent. Iron is 6 percent. Magnesium is 4 percent. Potassium is just above 4 percent. Aluminum is 10 percent. Sodium is 4 percent.
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