![]() Oxygen is an element which is highly reactive and also easily combines with other elements. It is arguably the most important element to life on Earth, and indeed it comprises roughly two thirds of the human body’s components. Oxygen makes up 21% of the Earth’s atmosphere and 90% of the mass of water. ![]() Within the universe at large, Oxygen ranks number three in abundance. This means it makes up roughly 46% of the Earth’s crust. Oxygen is the most abundant element in the Earth’s crust, at 461,000 parts per million. One of the most prominent and important elements that make up the crust of the earth is Oxygen. % Abundance of elements in Earth's Crust. ![]() 10 Most Abundant Elements In Earth's Crust
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