Answer: They filter sediments and other material from runoff.
Step-by-step explanation:
- A piece of land covered by water is known as a wetland.
- Some examples are marshes, ponds, deltas etc.
- The wetlands abiotically help them to protect the water quality of the marine ecosystem by filtering the sediments that are present in the surface runoff as well as by absorbing many of the harmful pollutants present in it. In this way, they prevent them from reaching the marine water bodies.
- Thus, the wetlands act as nature's cleansers or filters.