What is Soil?. “a living, dynamic system with organic and inorganic components. Soil is a product of its environment and parent material”. components. By volume: 45% mineral 5% organic material 50% space (air/water) By mass? 0% air 18% water 80% mineral 2% organic material.
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“a living, dynamic system with organic and inorganic components. Soil is a product of its environment and parent material”.
a. Parent Material
b. How resistant minerals are
material on and in which soil develops
soil moisture conditions
Micro-environmental factors (relief, drainage)
1) climate vegetation, litter (amount, type)
2) rate of decomposition
hot,wet >> cold, dry
O2 CO2 N2 H 2O vapor (per cents by volume)(rh)
Above-ground atm. 20.97 0.03 79.0 <100%
Soil (grassland) atm. 18.4 1.6 79.2 100 %