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.
Jewelers measure gold by karats. Pure gold is 24 karats and contains 99 percent to 99.9 percent pure gold. Most gold jewelry is an alloy, or mix, of gold with one or more metals. The higher the karat number, the more gold a piece contains.Mixing gold with other metals makes the piece stronger but lessens its value.ure gold is 24 karats and contains 99 percent to 99.9 percent pure gold. Most gold jewelry is an alloy, or mix, of gold with one or more metals. The higher the karat number, the more gold a piece contains. Mixing gold with other metals makes the piece stronger but lessens its value.