ZIP Codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, was chosen to suggest that the mail travels more efficiently, and therefore more quickly (zipping along), when senders use the code in the postal address. The basic format consists of five numerical digits. An extended ZIP+4 code, introduced in 1983, includes the five digits of the ZIP Code, a hyphen, and four additional digits that determine a more specific location within a given ZIP Code.
The Pink River Dolphins of the Amazon River in South America are  pink-colored because they have a lot of blood vessels near the  surface of their skin, so that they can betâ¦ter control their body  temperature.    The pink river dolphin of the Amazon River is rare.
The Magical Pink River Dolphin. Among the strangest and most enchanting creatures of the Amazon is the beautiful and intelligent Pink River Dolphin, scientific name Inia geoffrensis, or peixe boto as they are known in Brazil. You canât miss them as they play and perform acrobatics in the waters of the Central Amazon Region.