The cowpea (Vigna unguiculata) is one of several species of the widely cultivated genus Vigna.Four subspecies are recognised, of which three are cultivated (more exist, including V. textilis, V. pubescens, and V. sinensis):ccording to the USDA food database, the leaves of the cowpea plant have the highest percentage of calories from protein among vegetarian foods.
1 Victoria Falls - 108 m (354 ft) high; widest in Africa and one of the widest in the world.  Mutarazi Falls - 762 m (2,500 ft) high; highest in Zimbabwe, second highest in Africa and 17th highest in the world.
The highest known waterfalls of the world, falling from the height of 979 meters(3,212 feet) is located in Bolivar Province, Venezuela. It also boasts the single highest plunge of the world. It drops 2,648 feet from a plateau Auyan-Tepui.