Summary
Builds on food chains to introduce food webs — the interconnected network of feeding relationships in an ecosystem — and shows why removing a single species can have ripple effects throughout the entire web.
Viewer safety
All ages
Common Sense Media — not yet ratedIMDb Parents Guide — not yet rated
Our rating is a quick teacher-to-teacher guide — preview before showing.
Teaching resources
Discussion questions
Discussion
- How is a food web different from a food chain?
- In a food web, what happens when one species is removed?
- What is a keystone species? How does it affect a food web?
- Humans are part of many food webs. What are the effects of overfishing one species?
Quick work-a-long
Vocabulary: food web, ecosystem, keystone species, interconnected, predator, prey, balance.
Try it: Draw a food web with at least six organisms from a local ecosystem. Connect them with arrows showing energy flow. Then remove one herbivore — draw arrows showing which other populations might grow or shrink as a result.