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.  

this protocol describes a detailed procedure for intracellular flow cytometry staining.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands