What role do wetlands play in the water cycle?

Wetlands play a crucial role in the water cycle by acting as natural buffers that limit flooding and purify water. When excess rainwater or runoff enters a wetland, the unique vegetation and soil composition work together to slow down the flow of water. This ability to manage and store water helps mitigate flooding downstream, preventing damage to property and ecosystems.

Additionally, wetlands are essential for water purification. They filter out pollutants and sediments, breaking them down through biological processes and trapping contaminants within the soil and plant roots. This results in cleaner water entering rivers, lakes, and aquifers, contributing to overall water quality.

The other options suggest limited or specific functions of wetlands that do not encompass their broader role in the water cycle. While wetlands do collect rainfall and can contribute to groundwater recharge, their primary functions of flood mitigation and water purification highlight their importance in environmental health and management.