Which outcome results when highland maize is cultivated above its optimal thermal limit in a pre-Columbian environment?

💡 Explanation

Lowered photosynthetic efficiency arises in maize because metabolic processes slow due to decreased temperatures, caused by climbing above optimal temperature limits; therefore energy production declines, rather than rising resistance to pathogens or improved nitrogen fixation rate.

• Which outcome accelerated terrace degradation when intensive maize cultivation exceeded soil regeneration rates in the Andes?
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• Which increased risk resulted from using the motte-and-bailey castle design during early medieval sieges?
• Which consequence results when ancient Chinese cast iron cannons contained excessive sulfur?
• Which metallurgical consequence resulted from exposing crucible steel to prolonged high-temperature soak?