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.
White is the most common color of gold jewelry and results from mixing pure. gold with a white metal such as nickel or palladium. Pink, rose and red gold are. derived by adding copper to the mix; the greater the copper content, the redder. the gold. Silver is responsible for turning gold a pale greenish-yellow, while silver. combined with manganese and copper turns gold a pale shade of grey.