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closed ecosystem

noun, Ecology.
a self-replenishing ecosystem in which life can be maintained without external factors or outside aid. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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closed-ecosystem in Culture

closed ecosystem definition

An ecosystem in which no materials can leave or enter but through which energy from external sources can flow.

Note: The Earth is a closed ecosystem.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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