Which outcome occurred in ancient Sumerian canals when maintenance declined?

💡 Explanation

Increased waterborne disease prevalence occurred because decreased flow from a lack of maintenance resulted in stagnant water, which is linked to pathogen concentration (pathogen concentration mechanism); therefore vectors thrived, expanding diseases rather than providing irrigation.

• Which navigational outcome resulted from Islamic scholars enhancing the mechanical accuracy of astrolabes?
• Which consequence resulted for 18th-century warships using iron ballast?
• Which impairment emerged gradually on 18th-century wooden ships traversing diverse climates?
• Which outcome resulted from reducing sail AREA of Viking Knarr ships?
• On medieval ships using kamal navigation tools, which limitation rises when sighting near Polaris?
• Which outcome occurred in Song Dynasty iron production when the bloomer process was superseded?