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.
Considerable overlap in toxins exists between venomous snake species and venomous lizard species. While the system of delivery differs -- snakes inject venom through sophisticated fangs while lizards have more primitive glands that mix venom with saliva -- the common toxins suggest a shared lineage.hough poison and venom are often used interchangeably, and though both rely on the transmission of toxins from one organism to another, poison and venom are different concepts. Poisonous animals, like poison dart frogs, have a toxin that is present on or in their bodies.