How does salt affect plant growth, like when we use salt to de-ice snowy winter roads? How does adding fertilizer to the soil help or hurt the plants? What type of soil best purifies the water? All these questions and more can be answered by building a terrarium-aquarium system to discover how these systems are connected together.
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It depends on what your scientific investigate question is… if you’re trying to find that limit, then yes, there is a limit!
Is there a limit of salt in the water?