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Answer: B) Oxygen
The Earth’s crust accounts for 1% of the planet’s total volume. The crust is made up of several different elements, some of which are more abundant than others.
Oxygen
- Oxygen is by far the most abundant element in the Earth’s crust, accounting for 46 percent of the total mass.
- Oxygen is a highly reactive element that forms oxides when it reacts with other elements.
- Minerals like granite and quartz (silicon oxides), rust (iron oxides), and limestone (calcium oxides) are examples of common oxides (oxide of calcium and carbon) present in the earth’s crust.
