Sally wants to see which fertilizer makes tomato plants grow the tallest. she use 3 types (a, b, c) and leaves one group in soil without any fertilizer. identify the independent variable, dependent variable, and the control group in this experiment.

Independent: The types of fertilizer. (Independent I Change)

Dependent: The plants height. (Dependent is Dependent on the Independent)

Control: The Type of plants (What isn't being changed throughout the experiment.)

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.