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Hello everyone! So for my biology IA I intend on investigating the effect of cigarette smoke on plant growth. I will be exposing plants to filtered/unfiltered cigarettes over prolonged periods of time and periodically measuring their growth. What do you think of this idea? Will it be successful and good at getting me a high mark? I have back up ideas which are investigating the effect of acid rain on plants (using vinegar to lower pH of water of plants), or effect of overpopulation on plant growth (by planting a lot of seeds in a certain area). Thank you for your feedback