Experiment in a Bog: Finding Dependent Variables

[gsingh2011]

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.

 

[Drakkith]

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.