Comparison of even-toed ungulate and cetaceans genetic material has shown that the closest living relatives of whales and hippopotamuses is the paraphyletic group Artiodactyla. Dan Graur and Desmond Higgins were among the first to come to this conclusion, and included a paper published in 1994.
Definition of roundâtrip. : a trip to a place and back usually over the same route.
Perimeter is the length around a shape. The length around a circle has a special name, circumference. The word circumference comes from the Latin word circum meaning around, and ferre meaning to carry. Circumference: to carry around, like a carnival ride. . . From a website created by a manufacturer of carnival rides: http://www.users.globalnet.co.uk/~iirides/. Centuries ago, in Egypt, it was known that the length around a circle was approximately 3 times the distance across the same circle.