oxygen is the most abundant element found on earth.
what is the most abundant element found on earth?
oxygen
magnesium is the ninth most abundant element in the universe. it is produced in large, aging stars from the sequential addition of three helium nuclei to a carbon nucleus. when such stars explode as supernovas, much of the magnesium is expelled into the interstellar medium where it may recycle into new star systems. magnesium is the eighth most abundant element in the earth's crust and the fourth most common element in the earth (after iron, oxygen and silicon), making up 13% of the planet's mass and a large fraction of the planet's mantle. it is the third most abundant element dissolved in seawater, after sodium and chlorine.
magnesium
carbon is the 15th most abundant element in the earth's crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. carbon's abundance, its unique diversity of organic compounds, and its unusual ability to form polymers at the temperatures commonly encountered on earth enables this element to serve as a common element of all known life. it is the second most abundant element in the human body by mass (about 18.5%) after oxygen.
carbon-based life