I need help with this experiment!!!!?

my science project is about lants









i have to keep fresh cut flowers fresh longer so i crushed aspirin tylenol and motrin in to the water of three same flower arrangements





i really need to no what is the varieable thanx!!!!







sorry for any spelling mistakes

I need help with this experiment!!!!?
Well assuming you crushed aspirin in one vase, tylenol in the 2nd, and motrin in the 3rd, your variable is the medicine which you put into the water.



You should also have a 4th vase with the same arrangement with just pure water, as a control. Then you'd be able to tell which medicine makes the flowers fresh longer compared with the natural state, not just the other medicines.
Reply:Something that also works is sugar, place a little bit of sugar in the water and stir to dissolve..it provides the nourishment the plants need. Also a variable that you should consider and you did not mention is the nature of the flowers, are all 3 arrangements exactly the same? Were the flowers cut all on the same day? Did you freshly cut the stems before you placed them in the vase? Where are you storing the flowers, are they all in the same environment (heat, light etc)?



Just some thoughts....
Reply:huh

internet explorer 7