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.
Some examples of invertebrates are mollusks -- snail, mussel, quahog, squid, octopus, nautilus --, echinoderms -- starfish and sea urchins --, arachnids, crustaceans -- lobsters and crabs --, all insects, annelids -- worms and leeches -- protozoa and jellyfish. The main difference between.are that vertebrates have backbones, while invertebrates do not. Other differences are that vertebrates have highly developed brains, while most invertebrates do not.nvertebrates are slow moving, and sometimes small, while most vertebrates are faster, and sometimes larger in size than invertebrates. 98% of animal species are invertebrates, meaning that 2% of animal species are vertebrates.