Experiment in a Bog: Finding Dependent Variables

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In the discussion, the focus is on conducting an experiment in a bog to explore the relationship between dependent variables, such as pH and mineral levels in water and soil, and an independent variable. Suggestions for independent variables include measuring how pH changes with depth, examining distance from various terrain features, or analyzing soil differences that support different vegetation types. The conversation emphasizes the diversity of bog environments, highlighting the potential for various study angles in this unique ecosystem.
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I need to do an experiment in a bog and find a relationship between to variables. Some ideas of dependent variables (variables that I measure) that I have are the pH levels and mineral levels in the water and soil. However, I'm stuck on finding an independent variable (the variable that I change). For example, I could do how the pH changes as depth changes, but I was hoping for something better. Can anyone give me any ideas? I've never been to a bog, btw, so you may need to be a little more specific. Thanks.
 
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Depth change seems like a perfectly fine independent variable. You could also try distance from different terrain features, or differences between the soil that supports different types of vegetation, etc. Bogs are varied and there are a number of potential things you could study.
 

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