The building comprises a central core and two wings: the North Tower and South Tower. When built, there was open space separating the towers from the core between enclosed bridges. Today the entire core area has been enclosed.
Overview: A program that introduces students to some of the major differences between fish, amphibians, reptiles, birds and mammals. Students will understand the differences between vertebrates and invertebrates, and how humans fit into the environment.he level of differentiation we are going to examine in this program is the broad taxonomic classification class.. The phylum chordata (animals with backbones) is divided into five common classes: fish, amphibians, reptiles, mammals and birds.
Because some reptiles are more closely related to birds than they are to other reptiles (crocodiles are more closely related to birds than they are to lizards), many modern scientists prefer to make Reptilia a monophyletic grouping and so also include the birds, which today contain over 10,000 species.