[2026] PTE Academic Listening - Fill in the Blanks (Type In)

Wetlands are often overlooked but are among the most biologically ecosystems on the planet. These areas act as natural sponges, absorbing excess and mitigating the risk of downstream flooding. In addition to flood control, wetlands serve as a sophisticated system that removes pollutants from the water. They provide a vital for various fish species and a critical stopover for migratory birds. Despite their ecological value, many wetlands have been drained for expansion or urban development. Scientists are now emphasizing the of these areas to enhance global biodiversity and carbon sequestration.