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Cool and creative ideas so far! I'm glad you two are brainstorming up so many potential experiments.
What you are suggesting are different treatments (independent variables), but I'm also curious what you will be measuring (your dependent variable). Are you looking at seed survival, or how big plants grow to be, or something else? This will help design your experiment!
I think light and temperature experiments could be very informative for understanding how seeds react in the real world! Both of those ideas sound very promising to me :)
If you're interested in how vinegar affects seeds/plants, we could also design an experiment around the soil pH and its effect on seeds! A pH is measured on a spectrum, with water being right in the middle (neutral), and the other ends being either acidic or basic. Vinegar has a very low pH, which means it's very acidic! That's why it tastes so strongly on food, or is sometimes used for cleaning. Something very basic is baking soda or soap! So, another possibility would be to germinate or grow seeds in a basic, neutral, and acidic environment and see which one grows best!
Let me know what you're planning to measure and if you guys like some experiment ideas over others!
Great work so far.
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Liaison Cameron thought "Julia is very thorough in her explanations about running experiments. For example, explaining independent and dependent variables."
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