Amphibians (class Amphibia ) are cold-blooded tetrapods (four-legged vertebrates) whose eggs lack a tough protective membrane around the embryo. The term "amphibian" comes from the Greek amphi meaning "both" and bios meaning "life," hence, "double life." This reflects the fact that most amphibians are biphasic, having an aquatic stage where they spend part of their time, as well as a terrestrial stage.
Serial monogamy is a form of monogamy in which participants have only one sexual partner at any one time, but have more than one sexual partner in their lifetime. The term " serial="" monogamy"="" is="" more="" often="" more="" descriptive="" than="" prescriptive,="" in="" that="" those="" involved="" did="" not="" plan="" to="" have="" subsequent="" relationships="" while="" involved="" in="" each="" monogamous="">
Previous (Africa) Next (African-Americans) Martin Luther King is perhaps most famous for his "I Have a Dream" speech, given in front of the Lincoln Memorial during the 1963 March on Washington for Jobs and Freedom The American Civil Rights Movement (1955-1968) was a biblically based movement that had significant social and political consequences for the United States.
Previous (English Bill of Rights) Next (English Renaissance theatre) The term English Civil War (or Wars ) refers to the series of armed conflicts and political machinations which took place between Parliamentarians (often called the Roundheads) and Royalists (or the cavaliers) from 1642 until 1651. The first (1642-1645) and the second (1648-1649) civil wars pitted the supporters of King Charles I against the supporters of the Long Parliament, while the third (1649-1651) saw fighting between supporters of King Charles II and supporters of the Rump Parliament.
In zoology, ray is the common name for cartilaginous fish comprising the order Rajiformes (or Batoidea), characterized by enlarged and flat pectoral fins continuous with the head, no anal fin, eyes on the dorsal surface, and a narrow tail. The skates comprise a family, Rajidae, within the Rajiformes, and thus can be considered a type of ray.
The State of Georgia is a state in the United States and was one of the original Thirteen Colonies that rebelled against the United Kingdom and British rule in the American Revolutionary War . Founded by a group of philanthropists and named for George II of Great Britain, Georgia was the last of the American Colonies, in 1732, to be established.