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RESOURCES (Types-Resources (DEVELOPMENT (ACTUAL RESOURCES
•Can be…
RESOURCES
Types-Resources
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DEVELOPMENT
ACTUAL RESOURCES
•Can be developed by man & are being used continuously
•Quantity is known
•eg. Coal deposits in Rhur
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Resources
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Characteristics
• Capacity to satisfy human needs
• Limited quantity
• Utility changes with improvement in science and technology
Value
•Depends on utility
•ECONOMIC: Used for production eg. iron
•LEGAL: Quality
eg. air
•ASTHETIC: Beauty
eg. mountain
•ETHICAL: Preserve resource important for the environment
Soil
What
Thin layer of mixture of mineral & organic matter found on the surface of the earth.
• Most important resource
• Place for plants to grow
Importance
• W/o soil nothing would live or grow
• Largest reservoirs of biodiversity
• Contains 1/3 of life on earth
• Natural water filter
• Largest source of organic carbon(75%)
Formation
• 1000+ yrs
• surface rocks break down & mix with decaying organic matter returning nutrients to the ground
• 1) parent material: Inc mineral+ organic material (humus).
2) climate:influences weathering. Warm & moist- fast growth.
3) biology: Plants help mix soil & recycle nutrients. Roots anchor soil.
4) topography
5) time
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Soil
Conservation
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Crop rotation : Planting grass on fields between harvesting & planting next crop (helps regain lost minerals)
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Embankments : Strong structure along banks of flowing rivers preventing water from washing away soil.
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Building dams : Prevents floods, protecting crops & top soil.