What effect does the amount of sunlight exposure have on the growth rate of sunflowers? - Independent Variable: Amount of sunlight exposure.Dependent Variable: Growth rate of sunflowers.Controlled Variables: Type of soil, size of pot, amount of water, type of sunflower. , How does the temperature of water affect the time it takes for sugar to dissolve? - Independent Variable: Temperature of the water.Dependent Variable: Time it takes for sugar to dissolve. Controlled Variables: Amount of sugar, amount of water, stirring method., Does the size of a ball affect how far it rolls? - Independent Variable: Size of the ball. Dependent Variable: How far the ball rolls. Controlled Variables: Surface type, starting position, type of ball.,

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