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Type: Multiple-Choice
Category: Communities, Populations, and Ecosystems
Level: Grade 4
Author: kelebutler
Last Modified: 6 years ago

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Communities, Populations, and Ecosystems Question

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Grade 4 Communities, Populations, and Ecosystems

A system that is in balance is said to have
  1. openness.
  2. stability.
  3. input.
  4. output.