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← HistoryWhich risk increased because intensive chinampa farming lowered shallow lakebeds?
A)Increased susceptibility to seasonal droughts
B)Higher salinity of remaining waters✓
C)Reduced incidence of waterborne pathogens
D)Greater stability of causeways
💡 Explanation
Intensive seasonal drainage of Xochimilco chinampas in Mesoamerica increased saltwater intrusion, leading to higher salinity through capillary action. Therefore, salinity increased, because topsoil evaporated, transporting brine upwards, rather than more moisture, leading to less disease.
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