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Top 10 Most Abundant Elements in Earth's Oceans
Oxygen
85.84%
Hydrogen
10.82%
Chlorine
1.94%
Sodium
1.08%
Magnesium
0.13%
Sulfur
0.09%
Calcium
0.04%
Potassium
0.04%
Bromine
0.007%
Carbon
0.003%