Irrigation Reduces Soil Quality, but Rains Usually Do Not

question 5

Multiple Choice

Irrigation reduces soil quality, but rains usually do not. Why?

• A) Rains deliver less water to soil than irrigation does.
• B) Water used for irrigation contains fertilizer and pesticides that affect soil quality.
• C) Rainwater contains lower amounts of salt.
• D) The fast water flow during irrigation removes organic material from soil.
• E) The fast water flow during rains is able to remove toxic materials from topsoil.

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