Predator–prey relationships Student activity Play

Relationships between free energy and metabolic reactions Whiteboard exercise Play

Relationships between quantities Animation Play

Relationships between quantities Student activity Play

Relationships between vectors Whiteboard exercise Play

Relationships between voltage and current Animation Play

Reproduction in mammals Student activity Play

Sponges (phylum Porifera) Student activity Play

Structural adaptations; mode of feeding and type of food Slideshow Play

Structural adaptations; mode of feeding and type of food Student activity Play

The brown bear – a typical omnivore Slideshow Play

The needs of nature conservation Slideshow Play

Types of heterotrophic nutrition Student activity Play