Question

I need to find :
a possible hypothesis for this experiment,
the independent/dependent variable for that
hypothesis,
the control,
at least 3 constants.

Experiment:
Objective: This project was designed to test onion root tips and how they react to different nutrient solution. These results were then applied to the principles of mitosis.
Materials and Methods: Plants are submerged in 12ml of water, 2 plants for each 3 nutrient and water. These are tested for 14 days, making daily observation.
Results: The results of the experiment conclude that the control group

Answer 1

grew the very best compared to carbonated water, Miracle Gro, and salt water.
Conclusion: This may be due to high concentration of additives.

Answer 2

your independent variable was what you put into the water of the onions. your dependent variable would be the amount of water. maybe event the time. and kind of the fact that you used only three nutrients on each plant. although that last sentence I said would more likely go with your independent variable. you see, your independent variable is something you can change. something you have control over. you DON'T have control over the dependent variable, and now that I think of it, your dependent variable could also be the growth of the onion. something you cannot exactly control.