The system immediately responds to the student's proposal by posing a question about that animal. The questions the system asks are intended to teach students the basic relationships that underlie animal behavior. In this case, the question emphasizes that animals do not engage in behaviors unless they help the animal to survive. The student asks to watch the demo. That's a good idea.
Bees protect themselves by fighting enemies.
The system has another video that shows a very different animal doing the same thing. This helps to show commonalties across the wide spectrum of animals. Bees are not the only animals that fight enemies. For example, jawfishes fight enemies. I have a good video about that.