Which benefit primarily resulted from terrace farming in the pre-Columbian Andes?

💡 Explanation

When slopes were terraced, flow-induced shear stress decreases because of friction reduction and surface area reduction, preventing soil detachment and transport during heavy rain. Therefore erosion is reduced rather than insulation, absorption, or sedimentation, which require entirely different mechanisms related to thermal properties or material transport.

• Which limitation affected medieval Islamic astronomical observations using open-sighting alidades?
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• Which outcome occurred when undermining Roman defensive walls during sieges without proper shoring?
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