Which consequence arises from prolonged high humidity within a Byzantine mosaic?

💡 Explanation

Efflorescence occurs because soluble salts migrate to the surface, then crystallize as humidity changes; the crystallization creates pressure within the mosaic interface, weakening tessera adhesion; therefore, tesserae detach, rather than inherent structural vulnerabilities causing cracking or decomposition.

• Which risk increased for navigators using a metal-framed sextant in high-latitude, cold environments?
• Which outcome commonly occurred once the bloomery process became widespread for iron smelting?
• Which consequence occurs when winter freeze/thaw cycles act on Roman mosaics?
• Which weathering outcome increases in Mughal pietra dura architecture when rising damp transports salts?
• Which risk increased for Viking longships attempting trans-Atlantic voyages when poorly tanned sails were used?
• Which limitation primarily determined Viking longship sail size?