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  2. Iron - Wikipedia

    en.wikipedia.org/wiki/Iron

    The U.S. Institute of Medicine (IOM) updated Estimated Average Requirements (EARs) and Recommended Dietary Allowances (RDAs) for iron in 2001. [10] The current EAR for iron for women ages 14‍–‍18 is 7.9 mg/day, 8.1 mg/day for ages 19‍–‍50 and 5.0 mg/day thereafter (postmenopause). For men, the EAR is 6.0 mg/day for ages 19 and up.

  3. Iron oxide - Wikipedia

    en.wikipedia.org/wiki/Iron_oxide

    An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a ...

  4. Iron ore - Wikipedia

    en.wikipedia.org/wiki/Iron_ore

    Elemental iron is virtually absent on the Earth's surface except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths.Although iron is the fourth most abundant element in Earth's crust, composing about 5% by weight, [4] the vast majority is bound in silicate or, more rarely, carbonate minerals, and smelting pure iron from these minerals would require a prohibitive ...

  5. 105 Fun Facts About Science, History, Celebrities, and More - AOL

    www.aol.com/heres-103-fun-facts-actually...

    Ace trivia night with these cool and random fun facts for adults and kids. This list of interesting facts is the perfect way to learn something new about life. 105 Fun Facts About Science, History ...

  6. Many people don't get enough iron. Here are 7 easy ways to ...

    www.aol.com/lifestyle/many-people-dont-enough...

    Just 1½ cups of Cheerios provides 12.6 mg of iron, about 70% of the daily recommendation, while 1¼ cups of Kellogg’s Special K delivers 10.9 mg of iron, about 60% of the daily value.

  7. “Today I Learned”: 30 Interesting And Weird Facts To Satisfy ...

    www.aol.com/lifestyle/97-interesting-intriguing...

    Learning new things is important if we want to live a long and fulfilling life. Acquiring new skills and performing activities such as puzzles and other brain games strengthens our neurological ...

  8. Earth's outer core - Wikipedia

    en.wikipedia.org/wiki/Earth's_outer_core

    Earth's outer core is a fluid layer about 2,260 km (1,400 mi) thick, composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. [ 1 ] [ 2 ] [ 3 ] The outer core begins approximately 2,889 km (1,795 mi) beneath Earth's surface at the core-mantle boundary and ends 5,150 km (3,200 mi) beneath Earth's surface ...

  9. Iron in folklore - Wikipedia

    en.wikipedia.org/wiki/Iron_in_folklore

    Meteoric iron or "sky-iron" (Tib. gnam lcags) is the supreme substance for forging the physical representation of the vajra or other iron weapons, since it has already been tempered by the celestial gods in its passage across the heavens. The indivisibility of form and emptiness is a perfect metaphor for the image of a meteorite or "stone ...