What role do wetlands serve in ecosystems?

Wetlands play a crucial role in ecosystems due to their unique characteristics and functions. As natural water filters, wetlands are capable of trapping pollutants, sediments, and nutrients from runoff, thereby improving water quality. This filtration process helps maintain clean water in nearby rivers, lakes, and aquifers.

Additionally, wetlands serve as important flood control systems. They can absorb excess rainwater and store it temporarily, reducing the impact of flooding in surrounding areas. This capacity to hold and slowly release water helps regulate hydrology in a region, making wetlands vital for flood management.

Wetlands also provide critical habitats for diverse species, including various plants, insects, birds, and other wildlife. They support both aquatic and terrestrial organisms, creating rich biodiversity. Many species depend on wetlands for breeding, feeding, and shelter, highlighting the ecological significance of these environments.

Given these multifaceted roles, wetlands contribute to overall ecosystem health and resilience, making option B the most accurate statement regarding their importance.