11 Questions
What is the aqueous portion of soil that contains dissolved matter from the chemical?
Soil solution
Which chemical is commonly used to acidify alkaline soil?
Sulfur
What term refers to the loss of soil by the action of water and wind?
Soil erosion
Which process is associated with drought and loss of fertility?
Desertification
What is the main factor causing devastating deterioration of soil through erosion and loss of nutrients?
Deforestation
What is the typical composition of productive soil?
5% Organic Matter, 95% Inorganic Matter
Which component of soil contributes to the source of food for microorganisms?
Organic Matter
What is the main function of Inorganic Colloids in soil?
Absorb toxic substances
Which organic component improves soil physical properties by exchanging nutrients?
Humus
What is the residue left when bacteria and fungi biodegrade plant material?
Humin
Which component influences the properties of soil and has a small percentage in those properties?
Humic
Test your knowledge on the composition of soil including organic matter, inorganic matter, horizons, topsoil, transpiration, and inorganic colloids. Learn about the mixture of weathered rocks, minerals, decayed plants, and animal materials that make up soil.
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