Graduates from the Biological Sciences program will have demonstrated: An understanding of the tenets of modern biology and an understanding of how cellular functions are integrated from the molecular level to the cellular level, through to the level of organism, populations and functioning ecosystems.
Toxic hazard studies of flexible polyurethane foam include small scale testing and large. scale testing. The combustion modes examined include thermal decomposition, smoldering, and open flaming, and under ventilated flaming combustion. Of the small-. scale studies, only a few include smoldering foam.
Pure plastics have low toxicity due to their insolubility in water and because they are biochemically inert, due to a large molecular weight. Plastic products contain a variety of additives, some of which can be toxic.nplasticised polystyrene is a rigid, brittle, inexpensive plastic that has been used to make plastic model kits and similar knick-knacks. It also is the basis for some of the most popular foamed plastics, under the name styrene foam or Styrofoam.