Hypothesis: plants will grow more when the day is longer. describe the experiment you would use to test the hypothesis. be sure to include variables as well as experimental and control groups.

For example, you could grow three plants in july days are the longest. this would be the control group. starting on july 15, you would water them regularly and on july 30th you could take their average height and record it. then, you would do the same thing in january when days are shortest. this is the experimental group. start on jan 15, and end on the 30th, watering regularly. then, on the 30th you would take their average height and compare it to the plants you grew in july and see if growing the plants when days are longer actually made a difference or not. i hope this helps!!