Read the passage below carefully:
Mangrove ecosystems across coastal West Africa serve as crucial blue carbon sinks, sequestering atmospheric carbon dioxide at rates significantly higher than terrestrial tropical forests. While local communities have historically relied on mangrove estuaries for artisanal fisheries and timber harvesting, recent anthropogenic pressure—exacerbated by urbanization and unsustainable mangrove wood harvesting for fish smoking—has severely fragmented these fragile coastal habitats. Environmental scientists argue that the primary mechanism for preserving these ecosystems lies in establishing community-managed carbon offset initiatives that monetize blue carbon to fund sustainable coastal governance. Although critics point out that carbon market price volatility can occasionally disrupt revenue streams for participating coastal villages, structured community stewardship contracts paired with hybrid solar fish-dryers have nonetheless demonstrated marked success in mitigating deforestation while maintaining local economic security.
Based on the passage, match each statement on the left with its correct structural role in the passage on the right.
- Community-managed blue carbon initiatives offer the principal mechanism for preserving coastal mangrove ecosystems.Central Argument (Main Idea)
- Mangrove forests absorb atmospheric carbon dioxide at rates exceeding those of land-based tropical forests.Supporting Evidence (Ecological Benefit)
- Unsustainable wood harvesting for fish-smoking practices leads to severe coastal habitat fragmentation.Supporting Detail (Cause of Environmental Degradation)
- Fluctuations in global carbon market prices can periodically destabilize income for coastal communities.Qualifying Detail (Counter-argument or Potential Drawback)