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.
6.Gold gives extra sheen to the body: A person wearing a moderate amount of gold in the form of simple jewelry looks gorgeous. The color and soft shine of the gold is enticing. Gold has the malleability that helps to make beautiful jewelry, wearing of which gives a stunning appearance to the person wearing it. 7. Lowers arthritis symptoms:
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.