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Leaving aside the obvious (wet soil looks darker), the amount of organic matter or humus in a soil controls how dark the soil is. Generally the darker a soil is, the "richer" it is considered to be.
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Which earth sphere causes the movement of soils by wind?
cryosphere
Why is the red soil red in color?
Soils in the US can vary in color from red to orange to yellow to gray to brown to black and all shades in between. Soil textures can vary from fine clay (less than 0.002 mm in diameter) to very coarse sand with particle sizes in excess of 2 mm and all sizes in between. Soil can also vary greatly in layers just digging down from the topsoil.
What aspects of soils do pedologists study?
texture, color, what it is made up of, what horizon is it in.
Are soils the same everywhere?
No, soils vary widely. The grains which compose them vary with the rocks which were weathered to form them. This means there are different chemicals in the soils. The grain size has big effects on how the soil behaves, for instance clay soils retain water and sandy soils drain freely. The type of plants which grow there can change the nature of the soil, for instance its pH. The weather can affect things over time, e.g. by soluble nutrients being leached out by heavy rain. All that is aside from the things we might alter deliberately.
What causes the cracking of soils in most of the rice fields?
the heat of the sun and the dryness of the soil
What is the color of hydro?
clay soils, loamy soils and sandy soils
What causes salination?
- natural salinity of soils - soils pollution by human activities - irrigation - exaggerated evaporation of water from soils
What can prairie soils often be identified by?
their color
Which earth sphere causes the movement of soils by wind?
cryosphere
What are soils properties?
water absorption, color, texture, and fertility
What causes acid sulfate soils?
world war 1 dont have dogs
Which Earth sphere causes the downhill movement of soils and water by glaciers?
cryosphere
Which earth sphere causes downhill movement of soils and water by glaciers?
cryosphere
Why is the red soil red in color?
Soils in the US can vary in color from red to orange to yellow to gray to brown to black and all shades in between. Soil textures can vary from fine clay (less than 0.002 mm in diameter) to very coarse sand with particle sizes in excess of 2 mm and all sizes in between. Soil can also vary greatly in layers just digging down from the topsoil.
What aspects of soils do pedologists study?
texture, color, what it is made up of, what horizon is it in.
Are soils the same everywhere?
No, soils vary widely. The grains which compose them vary with the rocks which were weathered to form them. This means there are different chemicals in the soils. The grain size has big effects on how the soil behaves, for instance clay soils retain water and sandy soils drain freely. The type of plants which grow there can change the nature of the soil, for instance its pH. The weather can affect things over time, e.g. by soluble nutrients being leached out by heavy rain. All that is aside from the things we might alter deliberately.
What causes the cracking of soils in most of the rice fields?
the heat of the sun and the dryness of the soil
