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| Guppies acclimating to temperature and chemistry of a mini pond. |
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| Students take notes on how many of each organism they put in the "pond.", so that they can assess the health of the ecosystem when they return form winter break. |
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| Daphnia image from Wikipedia. |
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| Many students named their critters, including the tiny daphnia. One poor critter was mistakenly put in guppy cup and was eaten immediately. Food chain in action. |
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