Describe the nitrogen cycle and how it is affected by human activity. Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants.
Tumble polished unakite pebbles. First discovered in the United States in the Unakas mountains of North Carolina from which it gets its name, unakite is an altered granite composed of pink orthoclase feldspar, green epidote, and generally colorless quartz. It exists in various shades of green and pink and is usually mottled in appearance.
Unakite Stone. When looking upon a highly polished unakite stone, it is easy to imagine a field of green growing plants with lovely warm peach colored flowers for it often looks like a slice of this scene was cut out and immediately frozen into what that we call unakite stone.