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Perform the indicated operation:
Methane
A colorless, odorless gas that is the simplest alkane and a potent greenhouse gas, often produced by anaerobic digestion of organic material.
Visible Surface
The part of any object or phenomenon that is perceptible by the eye under normal conditions.
Iron-Oxide Mineral
A mineral composed primarily of iron and oxygen, often found in the form of hematite or magnetite, significant in various industrial applications.
Hematite
A reddish-black mineral composed of iron oxide, often used as an iron ore.
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