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.
There are four tabby patterns that have been shown to be genetically distinct: mackerel, classic, spotted, and ticked. A fifth includes tabby as part of another basic color pattern, the patched tabby, which may be a calico or tortoiseshell cat with tabby patches (the latter is called a torbie). cat's coat can be described as red tabby or gray tabby. Black and blue are colors that usually show up without tabby markings, but with some cats, a faint tabby pattern can actually be noticed. White is the only color that does not have any tabby markings.