Which layer of soil is closest to the surface?a.O (organic matter)b.A (topsoil)c.B (subsoil)d.C (parent rock)
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
Soil is a mixture of _______.a.solidsb.solids, liquids, and gasesc.solids and liquidsd.solids and gases
Animals contribute to soil formation through decomposition of organic material.
What causes soils and their horizons to differ?a.differences in climates where the soils are formedb.differences in plant and animal life in different locationsc.differences in the layout of the landd.all of the above
Soil horizons are defined by physical features.
Soil is not directly important to animal life.
The rate of soil formation cannot be increased.
Which of the following factors does not affect soil formation?a.precipitationb.timec.erosiond.none of the above
Which of the following soil particle types is the largest?a.sandb.siltc.clayd.potassium
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