Next, she places all four plants on the same windowsill, so they all receive the same amount of light each day. plant 1 stays in
the same position throughout the experiment. plant 2 is turned 180 degrees every 12 hours. plant 3 is turned 180 degrees every
24 hours. plant 4 is turned 180 degrees every 48 hours.
mrs. fairchild monitors the plants daily. she counts the number of leaves on each side of the plant, and she uses a protractor to
measure how far each plant is leaning away from the stick.
what is the test variable (independent variable) in the experiment?
pls