Independent, dependent variable, and control? in science experiment?

so u plant seeds in fresh water and salt water. and after 3 days u see which grew grass. what is the independent, dependent varaible and control. and if u could please explain, i dont understand what they areIndependent, dependent variable, and control? in science experiment?
the dependent variable are the plant because they DEPEND on the water(the independent variable) to survive. the control is the plants because you didn't do anything to it. if you have any more questions, email me @ princesspea010@yahoo.com.Independent, dependent variable, and control? in science experiment?
The hypothesis is the question you are attempting to test.. in this case it might be ';grass grows just as well with salt water as with fresh';





growing grass with fresh water is considered 'normal' so that is the control group... the unchanged situation... the grass grown with salt water is called the treatement group





the independent variable is the thing you control, in this case whether the grass is treated with fresh or salt water... I would assume the dependent variable is the length of the grass after some given amount of time or possibly just whether or not grass grew at all... in any case the dependent variable is the thing that happens as a result of your control of the independent variable





If grass grows in both cases, you could measure several stalks of grass at various times and graph growth rates over time... seems to me that grass probably won't grow at all in salt water
The independent variable is the salt because that is what you're changing. The dependent variable is if the grass grew, because that is what you're measuring and it depends on the independent variable. The control is what you're comparing it too, so since you are adding salt to the water, you're comparing your results to fresh water, so your control would be the fresh water.