Blitz: What's the Independent Variable?

Can you name the independent variable from the experimental hypothesis?

Forced Order Answers have to be entered in order
HypothesisIndependent Variable
If one plant is placed in a clay pot, and another is placed in a plastic pot, the plant in the clay pot will grow more
If plants are watered with either soda or water, the one being fed soda will grow more quickly
A dry tennis ball will bounce higher than a wet or frozen one
A frozen magnet will hold more paper clips than one at room temperature or one that has been boiling
Lemon juice will clean pennies better than bleach, dish soap or laundry detergent
Tin will rust more than aluminum when exposed to water
Tap water will evaporate faster than salt water
Boiling water will make the coffee dissolve more quickly
Plant growth will be positively affected by adding aspirin to its water supply
If two paper cups of water (one hot, one cold) are put in a freezer, the hot water will freeze faster

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