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.
To have gold in your possession itself is a satisfying feeling. It increases a person's self-worth. The person wearing gold displays increased self-confidence. It is pleasureful experience starting from buying a jewelry to wearing a jewelry till seeing it inside a decorative box. Gold has a special quality to make you feel happy and satisfied.
It is the alloy that gives gold jewelry the color you see. White gold has an alloy mixture that contains nickel and other metals. More nickel in the mix, the whiter the gold will appear. Conversely the higher the gold content (for example 18K) the more yellow, white gold will appear.