Students investigate how soil pH affects the height of tomato plants. Each of six tomato plants receives the same amount of light each day and is planted in the same size pot and given the same amount of water. Each plant is planted in soil with a
different pH What is the dependent variable in the investigation?
Сь
Ос
Od
The size of the pot in which the plants are grown
The pH of the soil in which the plants are grown
The amount of water given to the tomato plants
The height to which to tomato plants grow