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 mechanism ensured the structural integrity of Roman roads during seasonal temperature fluctuations?
• Which outcome occurs when gravity-fed 'chadar' (water cascade) systems supporting Mughal gardens develop a blockage?
• On ancient Roman roads, which consequence occurs when thermal expansion constraints induce compressive forces on the paving stones?
• Which mechanism limited the maximum height of load-bearing brick masonry arches constructed before the advent of reinforced concrete?
• Which architectural consequence occurred structurally in Mughal gardens when water flow fluctuated irregularly?
• Which outcome results when timber bridges constructed by Viking expeditions experienced prolonged saturation in Northern Atlantic voyages?