canada’s soil regions old making connections textbook pages 144-148
TRANSCRIPT
Canada’s Soil Regions
Old Making Connections
Textbook pages 144-148
The 4 main ‘components of soil’:
• Minerals: ________ particles and various nutrients
• This is why _____________ is so important as it moves rocks and materials
• Bacteria and Organic Material: _________ stuff that decays
• Air: provides CO2 and Oxygen to the plants through
the __________
• Moisture: absorbed by plants through their ______
Good Dirt???
• Why this
Combo?
Too much or too Little _____?
What are Leaching and Calcification?
• Leaching:
• Calcification:
Leaching / Calcification
How is topsoil created?
• Dead stuff falls on the earth and _______
• Fertilize with manure/ compost/ chemicals
– OOOPS!!!
Topsoil Erosion Issue
• Dirty 30s– Farmers turned over the soil
• New _______ were used too much!!!• Draught meant no _____to keep top layers of soil• Winds blew the topsoil away!!!
What is loam and why do farmers like it soooo much!!!
• is soil composed of sand, silt, and clay in relatively _______ concentration (Wiki)