Soil horizons are defined by physical features.
Soil is a mixture of _______.a.solidsb.solids, liquids, and gasesc.solids and liquidsd.solids and gases
Which of the following is defined as combinations of soil particles that vary in size and shape? a. clay b. aggregates c. silt d. loam Please select the best answer from the choices provided
The rate of soil formation cannot be increased.
Where does the organic material in soil originate?a.physical weatheringb.chemical weatheringc.decomposing plant and animal matterd.the atmosphere
Which layer of soil is most likely of greatest importance to plant growth?a.O (organic matter)b.A (topsoil)c.B (subsoil)d.C (parent rock)
Which of the following soil particle types is the largest?a.sandb.siltc.clayd.potassium
Which of the following factors does not affect soil formation?a.precipitationb.timec.erosiond.none of the above
Which of the following will be most influenced by the amount of organic material?a.soil colorb.soil texturec.soil structured.number of horizons
Which layer of soil is closest to the surface?a.O (organic matter)b.A (topsoil)c.B (subsoil)d.C (parent rock)
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