Iron

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Introduction to Iron

Iron is one of the elements you can't live without. Each molecule of hemoglobin in your blood contains iron atoms, helping you transport oxygen throughout your body. Iron is the primary element in the steel girders that support many buildings and the stainless steel flatware you may have in your kitchen. The core of the Earth is predominantly iron. The element is abundant in the Earth's crust and the Sun. Pure iron is even softer than aluminum, but you encounter it after it has been hardened for any of a multitude of uses.

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