Why is soil important to plants?a.It provides them with nutrients.b.It provides them with water.c.It provides them with a medium for growth.d.All of the above
Soil is not directly important to animal life.
The rate of soil formation cannot be increased.
Soil is a mixture of _______.a.solidsb.solids, liquids, and gasesc.solids and liquidsd.solids and gases
Which of the following areas would most likely have the deepest layer of topsoil?a.desertb.beachc.grasslandd.mountaintop
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
Where does the organic material in soil originate?a.physical weatheringb.chemical weatheringc.decomposing plant and animal matterd.the atmosphere
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
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 layer of soil is closest to the surface?a.O (organic matter)b.A (topsoil)c.B (subsoil)d.C (parent rock)
Soil horizons are defined by physical features.
Animals contribute to soil formation through decomposition of organic material.
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