Excerpt: 'Mangrove forests act as vital blue carbon sinks, sequestering carbon at rates up to ten times greater than terrestrial rainforests. However, coastal reclamation has degraded nearly thirty percent of them.' What is the author's primary concern?
Answer and explanation
Correct answer: D. Degradation of vital carbon-sequestering coastal wetlands
- Step 1: The excerpt contrasts the extraordinary carbon absorption of mangroves with their severe degradation due to reclamation. Step 2. The primary concern is the loss of these wetlands. Answer: Degradation of vital carbon-sequestering coastal wetlands. Why not the others: Rainforests do store carbon; cessation is not mentioned; timber is not discussed.
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