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Soils

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by

Kara Wagoner

on 30 January 2013

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Transcript of Soils

Foundation O Horizon E Horizon B Horizon C Horizon A Horizon The A horizon is the top layer of the soil horizons, also called "topsoil". The A Horizon also
has a layer of dark, decomposed
(organic)materials, this is called "humus". This layer is also where organisms like earthworms live, even some species of bacteria. The "O" stands for organic. This is because it is the surface layer. The surface layer is mostly made up of organic material and the different stages of decomposistion from plants and animals. Soils: The Horizons The B horizon is also know as "subsoil". It consists of mineral layers and concentrations of clay. The layer has very little humus and is usually a brownish or red color because of clay and Iron Oxides. Plant roots can penetrate through this layer. The C horizon is most commonly referred to as the "Parent Rock". This layer forms the framework of the soil. The C horizon may contain lumps of un-weathered rock, this layer forms, while bed-rock weathers. by: Kara Wagoner Different Soils:
Soil is vital for life on Earth, without soil plants wouldn't be able to survive. Soil gives plants the nutrients and minerals they need to survive.There are different types of soil that make up the ground. In this prezi will be learning about each soil "horizon" and what each one does to the Earth and or ground. Photo Gallery: R Horizon The R Horizon is referred to as "Bedrock". This layer excavates large, hard rocks that can't be done by hand The Horizon is a zone for strong leaching and eluviation. This happens when clay, minerals, and organic material are removed. This ;eaves behind un-pigmented soil particles.
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