3-1 Global Issue – Soil

Soil Issues: Discuss these and find if there are any conflicts near you.  Pollution, salinisation, Irrigation (how it is done), mono-cultures, genetic engineering, rainfall declines, falling water-tables, ocean incursion, deforestation, overgrazing, desertification, and humus depletion.

 

Soil Layers:

 

Issue: Soil pollution discussion about the role of humus.

Fun: Build your own soil with biscuits. Use edible biscuits … Digestive biscuits (bone colour) for bed rocks, chocolate milk for middle mush, oriels for top soil, add jelly worms. http://www.youtube.com/watch?v=Oz19nakHM7Q

  • Identify the soil types
  • Identify soil solutions, such as bio-char, humus and how they are made.
  • Some of these solutions absorb carbon dioxide. Find out how.
  • Soil and nutrition – humans need the same chemical elements as soil.

Test your soil… https://www.youtube.com/watch?v=UoD-cUMkRZY

Chant: Care for your soil.

 

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