For each scenario, identify the independent and dependent variable. 1.spending time petting an animal for an hour decreases stress levels by 10%. 2.the population of field mice doubles each hour. 3.the height of an elevator increases 10 feet for each floor it ascends.

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The independent variable is the time spent petting an animal, and the dependent variable is the stress level.

The independent variable is time, and the dependent variable is the population of field mice.

The independent variable is the number of floors ascended, and the dependent variable is the height of the elevator.