Peatlands, which cover only three percent of the Earth's land surface, are highly efficient carbon sinks, storing twice as much carbon as all the world's forests combined. However, when these wetlands are drained for agriculture, they transform into massive sources of greenhouse gases. Recognizing this threat, conservationists are working to restore these areas to their natural waterlogged states. This process, known as rewetting, blocks oxygen from reaching the dead plant matter, halting decomposition and locking carbon in the soil. [X]
The writer wants to add a sentence at the end of the paragraph (indicated by [X]) that emphasizes the long-term, global climate impact of peatland restoration. Given that all the choices are true, which choice most effectively fulfills this goal?
- By keeping this carbon safely underground, restored peatlands can serve as a vital, enduring buffer against rising global temperatures.Cevap
- BRewetting also helps local wildlife species, such as rare birds and amphibians, return to their native wetland habitats.
- CThis restoration is crucial, carbon dioxide emissions from drained peatlands currently account for roughly five percent of all human-caused emissions.
- DAlthough many nations have pledged to support these conservation efforts in the coming decades.