Which consequence results when prolonged tephra fallout occurs?

💡 Explanation

Heavy tephra fallout blocks sunlight, inhibiting photosynthesis; therefore, widespread crop failure and famine occur because of reduced plant productivity, rather than ozone depletion or glacial melting affecting higher-latitude environments.

• Which outcome is directly enhanced after prolonged volcanic ash dispersal on a stable upwelling zone?
• Which effect occurs when offshore winds strengthen persistently?
• Which effect indicates silicate mineral weathering via leaching?
• Which hazard increases near the down-sloping head of an alluvial fan?
• Which long-term outcome results when river avulsion redirects flow?
• Which outcome results when intense, prolonged wind erosion accelerates deflation?