Experiment to show how algal growth effects plants
You're going to have to give us more information than this, including what you have thought of as preliminary steps. Are you interested in microalgae or macro? Which factors are more important to your study-nutrient availability, sunlight availability, submergent plants vs. emergent plants...? Is this for a school project? One we get some exchange of ideas and more specific questions, we can help you out.
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