AP Environmental Scienceeasymcq1 pt
Over-irrigation in arid regions leads to salinization because
A.evaporating water leaves its dissolved salts behind
B.salt falls with the rain
C.crops manufacture salt
D.rivers bring salt upstream
Explanation
Core Concept
Every irrigation cycle deposits a little salt; without drainage the soil eventually becomes too salty for crops — the fate of ancient Mesopotamia's fields.
Correct Answer
Aevaporating water leaves its dissolved salts behind
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