Science
Ecosystems & Habitats
Conceptual
11–12 yrs
Food Webs & Interdependence
食物网与相互依存
Description
Construct and interpret food webs showing the interdependence of organisms in an ecosystem, explaining how a change in one population affects others
Mastery Evidence
- Draws a food web from given data with arrows showing energy flow direction
- Predicts how the population of one species would change if another species increased or decreased
- Distinguishes a food web from a food chain and explains why webs are more realistic
- Identifies producers, primary consumers, secondary consumers, and apex predators
Assessment Prompt
If your child was shown a diagram with lots of animals connected by arrows, could they explain what it means — tracing what eats what — and predict what would happen if one animal disappeared from the web?
