ibstudent77 Posted September 3, 2015 Report Share Posted September 3, 2015 I'm planning of doing my IA on different concentrations of 2 heavy metals, lead nitrate and copper sulfate on the rate of photosynthesis. This makes it 2 independent variables. This is my proposed RQ: How do different concentrations of lead nitrate affect the rate of photosynthesis in Cabomba Caroliniana, as measured by the number of bubbles, over the duration of one minute, compare to different concentrations of copper sulfate? All suggestions welcome, thanks! Reply Link to post Share on other sites More sharing options...
bguloglu Posted September 3, 2015 Report Share Posted September 3, 2015 Why those two? You need to be answer that question imo. Reply Link to post Share on other sites More sharing options...
ibstudent77 Posted September 3, 2015 Author Report Share Posted September 3, 2015 Why those two? You need to be answer that question imo. Well, copper sulfate is a heavy metal which is used as a pesticide, and lead nitrate has industrial applications. So it's kinda like agricultural vs industrial? 1 Reply Link to post Share on other sites More sharing options...
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