Connor & miguel want to investigate if the type of fertilizer changes the color of their hydrangea flowers. they select 10 hydrangea bushes & plant them in the same yard with the same type of soil. every bush gets 3 cups of fertilizer, but each receiving a different brand. one bush gets no fertilizer. all bushes receive morning sunlight and no afternoon sunlight. all bushes are watered the same amount every other morning. after 4 weeks, the boys observe the color of the blooms on each bush. 1. independent variable: 2. dependent variable: 3. hypothesis: 4. control group: 5. experimental group: 6. constants: