what is iron and silk???

Iron (pronounced /ˈˈī(-ə)rn/) is a chemical element with the symbol Fe (Latin: ferrum) and atomic number 26. Iron is a group 8 and period 4 element. Iron is a lustrous, silvery soft metal. It is one of the few ferromagnetic elements.

Iron and nickel are notable for being the final elements produced by stellar nucleosynthesis, and are therefore the heaviest elements which do not require a red giant or supernova for formation. Iron and nickel are therefore the most abundant metals in metallic meteorites and in the dense-metal cores of planets such as Earth. Iron and iron alloys are also the most common source of ferromagnetic materials in everyday use.






Silk is a natural protein fibre that can be woven into textiles. It is obtained from the cocoon of silkworm larvae reared in captivity (sericulture). The shimmering appearance for which silk is prized comes from the fibres' triangular prism-like structure which allows silk cloth to refract incoming light at different angles.

Silk fabric was first developed in ancient China, possibly as early as 6000 BC and definitely by 3000 BC. Legend gives credit to a Chinese Empress Xi Ling-Shi. Though first reserved for the Emperors of China, its use spread gradually through Chinese culture both geographically and socially. From there, silken garments began to reach regions throughout Asia. Silk rapidly became a popular luxury fabric in the many areas accessible to Chinese merchants, because of its texture and lustre. Because of the high demand for the fabric, silk was one of the staples of international trade prior to industrialization.




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What Is Iron-Deficiency Anemia?
Iron-deficiency anemia is a common and easily treated condition that occurs when there is not enough iron in the body. It is the most common type of anemia. A lack of iron in the body can come from bleeding, not eating enough foods that contain iron, or not absorbing enough iron from food that is eaten.

A MINERAL that is essential not only to good health but also to life itself. The bulk of the iron in the human body is in the red blood cells' hemoglobin; in fact, it is what makes blood red. Hemoglobin shuttles oxygen from the lungs to every body cell, and without iron, hemoglobin cannot do its job. Another compound, myoglobin, grabs iron from hemoglobin and stores it in muscles where it's crucial to proper muscle function. On hemoglobin's trip to the lungs, its iron carries carbon dioxide, which we then expel as we exhale. And that's not all. Iron is part of the chemical makeup of several vital enzymes and proteins and plays a major role in energy metabolism.
Silk is a natural protein fiber, some forms of which can be woven into textiles. The best-known type of silk is obtained from cocoons made by the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).

Silks are produced by several other insects, but only the silk of moth caterpillars has been used for textile manufacture. There has been some research into other silks, which differ at the molecular level. Silks are mainly produced by the larvae of insects that complete metamorphosis, but also by some adult insects such as webspinners. Silk production is especially common in the Hymenoptera (bees, wasps, and ants), and is sometimes used in nest construction. Other types of arthropod produce silk, most notably various arachnids such as spiders (see spider silk).

iron 鐵, 熨斗

silk 蠶絲,絲;絲織物(品),綢布,綢衣