Final answer:
The experiment likely demonstrated photosynthesis and the impact of plant presence on oxygen release in the water.
Explanation:
When a stem of Elodea was removed from the water in a bowl containing three snails and only two stems of Elodea, the experiment likely demonstrated the process of photosynthesis and the impact of plant presence on oxygen release in the water. In this setup, the Elodea was producing oxygen bubbles when exposed to light, indicating the release of oxygen through photosynthesis.
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