Independent Variable: Scenarios (such as different times of the day or places) used to check if a person will become depressed or not.
Dependent Variable: Number of people diagnosed with depression.
Constant: Amount of people who do not understand depression.
Control: How your setting can impact mood and performance.
<span>A person chooses to not eat red meat, spinach, or other foods high in iron.</span>
using cars that get lower gas mileage
