5.1 Introduction to soil systems

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5 Terms

1
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what is soil

a mixture of inorganic mineral particles and organic material from decomposed flora and fauna that covers the underlying bedrock, and in which a wide variety of terrestrial plants grow

2
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3 reasons why soil is important

  • all the food we eat comes from soil

  • soil is a habitat fir organisms

  • soils store and transfer heat affecting atmospheric temperature

3
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what are the storages in soil (6)

Organic matter

Organisms

Nutrients

Minerals

Air

Water

4
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what are the transfers in soil (6)

Biological mixing

Translocation

Leaching

Soil erosion

Infiltration

Percolation

5
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soil transformations (7)

Decomposition

Nitrification

Salinization

Weathering

Denitrification

Respiration

Photosynthesis