Which requirement increased irrigation labor for chinampa agriculture?

💡 Explanation

The need for irrigation labor increased where limited effective rainfall capture occurred in chinampa systems because capillary action from bordering water sources requires manual replenishing; therefore artificial watering became essential, rather than direct supply.

• Which optical consequence occurs when an astrolabe 's alidade arm degrades during prolonged exposure to high intensity insolation?
• Which degradation accelerates within Mughal pietra dura in fountains when subject to frequent wetting?
• Which risk increased due to introducing silkworm rearing Constantinople?
• Which outcome results when Roman roads traverse unstable subsoil?
• Which outcome results from continuous maize cultivation on steeply terraced hillsides lacking adequate drainage?
• Which structural failure mode was a major risk during the construction of timber-framed windmills?