University of Hamburg
University of Hamburg: Symbiosis & Normal Microbiota
A diagram of the different types of symbiosis. There are 4 examples of symbiotic relationships and explanations. Read this page and then give yourself a quiz.
TED Talks
Ted: Ted Ed: How Mucus Keeps Us Healthy
Your body produces more than a liter of mucus every day, and when you're sick, it can be hard to miss. But what exactly is mucus? And what does it do, besides making you miserable? The following video and learning guide reveals the...