Urban blight is a term used to describe the negative effects of urbanization on a city's environment. It includes slums, which are areas of poverty and overcrowding; LITTER, which is waste that has been discarded in public places; eyesores, which are buildings or structures that are considered unattractive or unpleasant; and SMOG, which is a type of air pollution caused by burning fossil fuels. All of these factors contribute to the deterioration of a city's environment and can have a significant impact on the quality of life for its residents.