Root is a computer term that has various meanings, depending on the context in which the word is being used. It could refer to the operating system's root directory. In the Linux and Unix operating system, there is a root user. Root has a different meaning when referring to data structure.
Photinia fraseri-Robusta. Photinia fraseri-Robusta is easy to grow, dense, tall hedge with striking red new growth.It is suitable for a full sun to part shade position, frost tolerant and requires little water once established.
Arabica vs Robusta: No Contest. June 1, 2002 by Sandi J. Holland. Though my research on coffee revealed over 30 species of the genus, the major commercial coffee beans come from Arabica and robusta trees. Arabica (Coffea arabica), named for the Arabs, is the better and more expensive of the two.