All land in China is owned by the central government. Enterprises, farmers, and householders lease land from the state using long-term leases of 20 to 70 years. England and Wales. For land ownership in England and Wales see Land tenure in England, English land law and History of English land law. Ireland
Manganese is a trace mineral that is present in tiny amounts in the body. It is found mostly in bones, the liver, kidneys, and pancreas. Manganese helps the body form connective tissue, bones, blood clotting factors, and sex hormones.
Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in many minerals.Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.anganese(IV) oxide (manganese dioxide, MnO 2) is used as a reagent in organic chemistry for the oxidation of benzylic alcohols (i.e. adjacent to an aromatic ring). Manganese dioxide has been used since antiquity to oxidatively neutralize the greenish tinge in glass caused by trace amounts of iron contamination.