Key Concepts: 1  Legumes (family Fabales) develop root nodules that harbour Rhizobium bacteria (rhizobia). 2  Endosymbiotic bacteria (bacteroids) convert nitrogen to ammonia (biological nitrogen fixation). 3  Legume crops restore fertility to agricultural soils by capturing nitrogen from the atmosphere.
Benefits of Wearing Gold: 1. Gold has healing property: Pure gold helps in healing the wound and controlling infections in the body. It is said that if a person places a piece of 24 karat gold (pure gold) on an infected area in the body or on a sore wound, the gold helps in reducing the infection.
Gold used in jewelry like wedding rings can come in many forms. Basic to understand the uses of gold in jewelry is karat. Karat with a K is the purity of gold, Carat with a C is a measure of weight use mostly in gem weight ( one carat is 1/5 gram). Karated gold used in engagement rings can be from 100% gold to as low as 37% gold. Goldâs karat grade is used to express the proportion of gold in an alloy or the quality of a gold alloy. Fine (pure) gold is 24 karat. The proportions in other karat grades are listed in the table below: The key to understanding gold karat is the karat value over 24. An example is a 14-karat gold wedding ring. It is 14/24, which equals 58.3% gold and 41.7% alloy. In most engagement rings the stamp in the ring is 14k or some times 585. Both of those stamps mean the wedding ring is 14 karat gold.