EDD Proposal
Experimental Design Diagram: pH level change in soil over time My question: How does the pH level in the soil change over time? Research: Works Consulted Gibson, Mary Jo. “Understanding Soil pH.” Penn State Extension , 28 June 2023, https://extension.psu.edu/understanding-soil-ph. Accessed 6 September 2025. United States Department of Agriculture. Inherent Factors Affecting Soil pH Soil pH Management , May 2014, https://www.nrcs.usda.gov/sites/default/files/2022-10/Soil%20PH.pdf. Accessed 6 September 2025. There are various influences that cause effects on the pH levels in soil including the texture of the soil, the climate, time of formation, and much more. In wet warmer climates pH levels will likely go down over time due to precipitation, but in dryer areas the pH levels may very well stay the same. Soil containing clay often takes longer to change in pH level while soil with sand is faster. The pH level is also affected by the numb...
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