What is an independent variable what is a dependent variable what is the control

An independent variable is the variable in an experiment that can be changed or controlled. the dependent variable is the variable that is being measured or tested in an experiment. and lastly the controlled variable is something in the experiment you cannot change.

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.

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