Build a living ecosystem

Follow energy through a food web, then change resources and populations to discover how living systems respond.

EnergyLifeMatter

Guided mission

Build a meadow food web with every important role

Choose organisms based on what you know, then check your food web.

0 chosen

Nutrients return to soil

Sunlight powers producers Food moves energy Matter cycles

Energy pathways

Add connected organisms to reveal energy pathways.

1 · Choose organisms

Choose up to 8 organisms

Producer

Plant eater

Predator

Decomposer

Simplified ecosystem model

Populations represent groups, seasons are compressed, and the rules show cause-and-effect patterns—not exact forecasts. Real ecosystems include many more species, relationships, chance events and human influences.