Direction: Write a research question for each scenario. Next, determine the Independent Variable (IV), Dependent Variable (DV), Controlled Group (CG) from the following science experiments.
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1. You water some plants with 4 different types of water (salt water, regular water, sugar water, and distilled water). After a two-week period, the height of the plants is measured.
2. Inside a greenhouse, different types of trees are kept at 3 different humidity levels. These are left for 3 years. One tree is left outside in normal conditions. The heights of the trees are measure once a week.
