Ross is conducting an investigation in which he has grown three bean plants in three different pots. Each pot is similar in size and contains the same amount and type of soil. He watered Pot 1 with 50 mL of water per day, Pot 2 with 70 mL of water per day, and Pot 3 with 100 mL of water per day. He put the pots on a sunny windowsill and measured the growth of each plant after a week. He recorded his observations.