UPSC Current Affairs — 19 January 2026

1 article · 5 mains questions

Ocean Acidification: Trophic Cascades, and Marine Ecosystems

Indian Express19 January 2026

Conservation, · Environmental · Pollution, · Degradation, · Ocean · Acidification

  1. How does ocean acidification threaten marine life, and why is the current rate of change unprecedented?
  2. What does recent research on shark teeth reveal about the cascading effects of acidification on apex predators?
  3. How does ocean acidification trigger trophic cascades, and why are calcium-dependent organisms particularly vulnerable?
  4. Why does ocean acidification pose a direct socioeconomic threat to coastal and small-scale fishing communities?
  5. What does the current trajectory of ocean acidification reveal about humanity's relationship to evolutionary timescales and ecological stability?
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