 Segregated communities often are characterized by more crime, greater pollution, higher population densities, more poverty, and fewer and lower quality services leading to infant mortality.
<fluency>  Segregated communities often are characterized by more crime, greater pollution, higher population densities, more poverty, and fewer and lower quality services leading to infant mortality.
 Segregated communities often are characterized by more crime, greater pollution, higher population densities, more poverty, and fewer and lower-quality services, leading to infant mortality.