Which consequence occurs when excessive moisture permeates tesserae adhesive in Byzantine mosaics?

💡 Explanation

Efflorescence arises due to the solubility pump, where water transports dissolved salts to the surface, because evaporation leaves salt deposits impacting the mosaic's visual quality physically. Therefore, efflorescence degrades surface geometry, rather than pigment changes or petrification altering subsurface volume.

• Which risk escalates for Viking longships when encountering headwater streams?
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• Which mechanism allowed the Romans to efficiently lift heavy stone blocks during construction?
• Which effect results when ancient Andean terrace retaining walls experience increased hydrostatic pressure from saturated soil?
• Which risk significantly increased for 18th-century wooden ships during voyages into colder Arctic waters?
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