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Soil Investigation – Extras

http://www.soil-net.com/album/Soils_Rocks/slides/brown_soil.html

Cross-section of soil showing different layers.

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Another cross-section of soil showing the different layers, with labels.

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Gley soil showing the characteristic greenish/bluish/grey color. This soil is probably from a wetland.

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http://lalandlab.st-andrews.ac.uk/niche/nicheconstruction2.html

Diagram showing the difference eathworms makes in the development of soil. Specifically, they help break down organic matter and work it into lower soil layers rather than it remaining on the surface.

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Video designed for students in Wyoming but very useful for demonstrating the soil texture tests.

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