1. Depth in meters
2. Depth in meters is the independent variable because it’s the thing you change in the experiment.
3. Number of bubbles per minute
4.Number of bubbles per minute is the dependent variable because it depends on the independent variable and you are not changing it the independent variable is.
5. Plant B produced the most bubble per a minute. But both pant A and plant B produced the most bubbles at depths 10 and 16. Also once they went past 16 meters the bubbles per minute slowly decreased.