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  1. › wiki › MineralMineral - Wikipedia

    Some mineral species can have variable proportions of two or more chemical elements that occupy equivalent positions in the mineral's structure; for example, the formula of mackinawite is given as (Fe,Ni) 9 S 8, meaning Fe x Ni 9-x S 8, where x is a variable number between 0 and 9.

  2. Carbon dioxide (chemical formula CO 2) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas.

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  4. Spurred by the infant formula crisis, a panel found that the agency shied away from tough decisions, sometimes fearing confrontations with industry over enforcement of critical public health ...

  5. Hyperglycemia is a condition in which an excessive amount of glucose circulates in the blood plasma. This is generally a blood sugar level higher than 11.1 mmol/L (200 mg/dL ), but symptoms may not start to become noticeable until even higher values such as 13.9–16.7 mmol/L (~250–300 mg/dL ).

  6. › wiki › ZincZinc - Wikipedia

    Characteristics Physical properties. Zinc is a bluish-white, lustrous, diamagnetic metal, though most common commercial grades of the metal have a dull finish. It is somewhat less dense than iron and has a hexagonal crystal structure, with a distorted form of hexagonal close packing, in which each atom has six nearest neighbors (at 265.9 pm) in its own plane and six others at a greater ...

  7. › wiki › OceanOcean - Wikipedia

    The entire ocean, containing 97% of Earth's water, spans 70.8% of Earth's surface, making it Earth's global ocean or world ocean. [15] [17] This makes Earth, along with its vibrant hydrosphere a "water world" [35] [36] or " ocean world ", [37] [38] particularly in Earth's early history when the ocean is thought to have possibly covered Earth ...

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