How do wetlands improve water quality in an ecosystem? a) wetlands have filter feeders that clean the water. b) wetlands have microorganisms that clean the water. c) wetlands act as sediment sinks (or basins). d) wetlands only have dirty, swampy water.

C) Wetlands act as sediment sinks (or basins).

Wetlands improve water quality in an ecosystem by acting as sediment sinks (or basins).

Wetlands filter water through their role in water flow. They act as a sediment sink depending on particle sizes, the concentration of the sediment load and flow velocity. The sediments which pass through wetlands will drop out of the water and become part of its ground layer. In this way, the water becomes clear and sediment is removed. Wetlands naturally reduce nutrient runoff also.  

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

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