Who were the tribes the Lewis and Clark encountered in North Dakota? Had the Mandan and Hidatsa ever seen an African-American before? How did tribes fare in the wake of the expedition?
The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths (from the Greek ÏÎ»Î±ÏÏ, platy, meaning flat and á¼Î»Î¼Î¹Î½Ï (root: á¼Î»Î¼Î¹Î½Î¸-), helminth-, meaning worm) are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
A name used all around the world to classify a living organism. It is composed of a genus and species name. A sceintific name can also be considered for non living things, the â¦ se are usually called scientific jargon, or very simply 'proper names for the things around you'. Members of the phylum Platyhelminthes are dorsoventrally flattened   with a triploblastic body composed of three different tissue layers:   ectoderm, endoderm, and the mesoderm. These animals are bilaterally   symmetrical, meaning that a slice directly through the middle can produce   two mirror images.