Biological agents that can be used as biological weapons Slideshow Play

Biological safety Student activity Play

Cnidarians – the first tissue organisms Student activity Play

Dangerous spores Student activity Play

Food chains Class activity Play

Food spoilage and its prevention Slideshow Play

How food chains work Student activity Play

Louis Pasteur's experiment Student activity Play

Removal of the spores of Clostridium botulinum from food Slideshow Play

Sample food chains Illustration Play

Structure of cnidarians Slideshow Play

The liver – role in the breakdown and removal of toxins Student activity Play

The liver – role in the breakdown and removal of toxins Whiteboard exercise Play

Viruses – their discovery and characteristics Student activity Play