Fill in the Blanks (Reading & Writing)

Urban wetlands are shallow, marshy areas deliberately preserved or built within cities to —absorbabsorbsabsorbingabsorption stormwater and filter pollutants before they reach rivers. Reeds and other wetland plants —removeremovesremovedremoval nutrients from runoff, which would otherwise feed harmful algal blooms downstream. These green spaces also —provideprovidesprovidingprovided habitats for birds and amphibians that would struggle to survive elsewhere in a dense urban —landscapelandscapinglandscapedlandscapes.