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 grapes are high in a class of phytochemicals (beneficial plant chemicals) called polyphenols, antioxidants which are concentrated in many fruits, some vegetables and in wine, tea and cocoa.They protect against heart disease by reducing blood clot formation.ince most of the antioxidants are found in the seed and skin of the grape â 80% unless the flesh is darker and has more antioxidants, a juiceâs or wineâs antioxidant content will be higher if it includes the seeds and skin. This is why red wine contains eight to ten times the polyphenol content as white wine.