Soil reaction is _______.a.the measure of the acidity or alkalinity of soilb.the highest amount of cations soil can absorbc.determined by the types of minerals in the soild.the layering of soil into horizons
Which of the following is an effect of organic matter on soil?a.improved soil structureb.decreased water retentionc.increased nutrient lossd.all of the above
How do microorganisms affect humus and thereby soil health?a.The presence of any microorganisms causes the destruction of humus, which leads to a reduction in soil health.b.Microorganisms increase the production of humus, which leads to a decrease in soil health.c.Microorganisms increase the production of humus, which leads to an increase in soil health.d.Microorganisms exist independently of humus and therefore do not affect soil health.
Humus creates good soil tilth, which is an indirect benefit of microorganism action.
Soil texture is determined by the amount and distribution of mineral particles.
Which of the following soil properties is not influenced by microorganism activity?a.soil acidityb.amount of organic matterc. nutrient levelsd.none of the above
Which of the following is not a way that humus affects the properties of soil?a.Humus expands with increased moisture levels.b.Humus increases the movement of water and air in soil.c.Humus decreases the porosity of soil.d.Humus acts as the basis for soil life.
Which of the following does not contribute to soil consistence?a.textureb.temperaturec.organic matterd.mineral types
Microorganisms can improve soil health, but do not play a crucial role in it.
Microorganisms play an important role in creating nutrient-rich soil.
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