Which risk increased for Babylonian bronze-smiths when riverine copper sources were depleted?

💡 Explanation

Variations in hardness increased, because alloy purity became harder to control; the mechanism is impurity segregation. Therefore, properties were inconsistent, rather than arsenic exposure or easier formation of slag or early crucible failure, which also occur with impure metals.

• Which risk increases when seasonal flooding deposits sediment into a Mesopotamian irrigation canals?
• Which soil condition primarily limited early Andean civilizations construction of vast terrace systems?
• Which tactical benefit arose during Byzantine naval sieges from the _siphōn_?
• Which outcome predictably follows the loss of evaporative cooling in a Mughal garden's reflecting pool during peak summer?
• Which outcome results when inefficient quenching follows casting wrought iron objects?
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