Ecosphere (aquarium) - Wikipedia
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Phosphorus cycle - Wikipedia
The sealed bottle garden still thriving after 40 years without fresh air or water
Closed ecological system - Wikipedia
4 Ways to Build a Self Sustaining Ecosystem - wikiHow
Mesocosm (aka ecosphere). Definition (wiki) A mesocosm is an experimental tool that brings a small part of the natural environment under controlled conditions. - ppt download
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How to Create an Ecosystem in a Bottle: 3 Unique Ways
Enclosed ecosphere, Page 2
7 Ways to Make a Closed Aquatic Ecosystem - wikiHow
Biotope - Wikipedia
12 Years in a Sealed Ecosphere — The Wonder of Science
Ecospheres / Closed Ecosystems
