Which risk increased when pre-Columbian Andean communities expanded terrace agriculture onto steeper slopes?

💡 Explanation

When terrace agriculture expanded onto steeper slopes, increased water runoff absorption occurred due to unconsolidated terrace fill, leading to soil water saturation and pore pressure increase, causing slope instability. Therefore catastrophic landslides are more likely, rather than crop failure, salt accumulation, or frost damage, which require different agricultural deficiencies.

• During the Islamic Golden Age, which optical effect limited the angular resolution of astronomical observations using early refractors?
• Which primary issue was circumvented by Inca terrace farming in the Andes mountains?
• Which outcome arises when ancient Inca agricultural terraces experience cyclical freeze-thaw events?
• Which vulnerability critically undermined Roman siege towers during protracted sieges?
• Which structural weakness frequently emerged in Roman concrete fortifications during the later empire?
• Which navigational challenge did Harrison's H4 chronometer overcome in 18th-century long-distance maritime navigation?