What is the role of wetlands in controlling aquatic pollution?

Wetlands play a crucial role in maintaining water quality by acting as natural filters for water. This filtration process is vital for controlling aquatic pollution. As water travels through wetland ecosystems, various plant roots and soil microorganisms help to trap sediments, break down pollutants, and absorb excess nutrients, such as nitrogen and phosphorus. This natural filtration system improves water clarity and quality, making wetlands important in mitigating the effects of runoff and other sources of pollution before the water enters larger water bodies.

The other choices suggest incorrect functions or impacts of wetlands. While some may view wetlands simply as recreational areas, this perspective overlooks their essential environmental functions. The suggestion that wetlands inhibit water flow and increase pollution contradicts their known role in aiding water management and flood control. Lastly, claiming that wetlands have no significant impact on pollution control dismisses extensive evidence demonstrating their value in protecting aquatic ecosystems from degradation and maintaining overall environmental health.