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 an example of chemical weathering?a.waves washing over rocks on the beachb.acid rain falling on sidewalksc.ice forming in the cracks of rocksd.wind blowing against rocks
Which of the following properties of soil helps in absorbing contaminants from the soil?a.cation-exchange capacityb.soil reactionc.soil structured.soil consistency
Soil erosion can be slowed by ____.a.no-till farmingc.plowing at least three times a yearb.cutting trees from the middle of fieldsd.farming on steeper slopes
Which of the following is a result of natural erosion?a.desert sandsb.lost seed germinationc.widened valleysd.all of the above
Artificial erosion does not impact the environment any more than natural erosion does.
Weathering and erosion both contribute to the disintegration of rocks.
Microorganisms and humus have little impact on soil health.
Erosion occurs based on the movement of water, wind, or ice over a surface and typically moves on the downward-creep slope because of
Which of the following statements about artificial erosion is true?a.Artificial erosion can occur 100 times faster than natural erosion.b.Farming practices do not contribute to artificial erosion.c.Artificial erosion causes a loss of fertile soil.d.Artificial erosion is only caused by recreational activities.
Wind causes erosion though ablation and abrasion.
On steep slopes and mountains, ____ helps reduce erosion by creating level areas for crops.a.a shelter beltc.mulchingb.strip croppingd.terracing
Which of the following statements about erosion is true?a.Erosion occurs as a result of drastic changes in temperature.b.Erosion occurs when wind or water moves over sediment, soil, or rocks.c.Physical and chemical are the two types of erosion.d.Movement is not required for erosion to take place.
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