There is no independent variable stated. Dependent variable should be growth of the plants. Controlled: potting, potting medium, watering.
It is not stated if the plants were identical. If not, plant type could be the independent variable.
In this study, a scientist designed an experiment to test plant growth. The plants were planted in identical pots with the same brand of potting soil. Each plant was watered with 20 ml of spring water every third day at 9:00 AM. Name the controlled portion of this experiment, the independent variable, and the dependent variable.
Controlled--Every third day
Independent- Potting soil
Dependent-Water
1 answer