Table of contents

1. Ecology:
   • community, habitat,ecosystem
   • an aquarium as a self-containded ecosystem
   • producers, consumer, decomposers
2. Cycles in an aquarium:
   • the "ecogame" story
   • instructions for producers, consumers, decomposers and abiotic factors
   • producers: energy, photosynthesis, respiration
   • consumers: feeding, respiration
   • decomposers: feeding & decomposition, respiration
   • draw the cycles in an aquarium
3. Food chains:
   • producers, primary-, secondary-, tertiary consumers
4. Food webs
5. Cycles in nature:
   • energy
   • oxygen- and carbon dioxide
   • water
6. Keywords: English-German