Which risk acutely increases following significant tephra fallout?

💡 Explanation

Asphyxiation events rise because volcanic ash inhalation burdens respiratory systems with fine particulate matter, inhibiting gas exchange; therefore, air quality plummets post-eruption leading to acute respiratory illness rather than the other indirect options.

• Which topographic feature increases following post-glacial isostatic rebound near a cirque basin?
• Which process explains saltwater lake formation near coasts?
• Which risk increases when pyroclastic flows deposit substantial tephra?
• Which geological outcome arises when increased pore water pressure weakens fault zone material along a transform fault?
• Which risk increases when coastal sediment transport stops due to a dam interrupting longshore drift?
• Which feedback results when volcanic tephra deposition increases albedo?