There are three main types of plate boundary: divergent, convergent and transform. Plates move away from one another at divergent boundaries. This happens at mid-ocean ridges. Plates move towards one another at convergent boundaries; one plate is forced below another in a process called subduction.
The skin of a Concord grape is typically dark blue or purple, and often is covered with a lighter-coloured epicuticular wax bloom that can be rubbed off. It is a slip-skin variety, meaning that the skin is easily separated from the fruit. Concord grapes have large seeds and are highly aromatic.
Concord (/ËkÉÅkÉËrd/ KONG-kord)[11] is the largest city in Contra Costa County, California. At the 2010 census, the city had a population of 122,067 making it the 8th largest city in the San Francisco Bay Area.[12][13] Founded in 1869 as the community of Todos Santos by Salvio Pacheco, the name was changed to Concord within months.