A scientist has two identical plants placed by a window one is in a red pot and the other is in a yellow pot she waters the one in the red pot with regular water and then the one in the yellow pot with nitrogen enriched water after 5 days she counts the number of flowers on each plant

and records her observations.

After 5 days, the scientist finds that the plant in the red pot has 10 flowers, while the plant in the yellow pot has 15 flowers.