Bailey designed a science fair experiment to test the effect of different light sources on the growth of rose plants. To conduct the experiment, she placed one group of ten rose plants in front of a window, then placed another group of ten rose plants under a light foxture with a special light bulb for plants. What is the outcome variable (dependent variable) in this experiment?
O the number of rose plants
o the growth of the rose plants
o the different light sources used

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.