Create more rain in a city
Lower the average temperatures in a city
Absorb more heat than green space
Can absorb pollution from the air
The rapid spread of urban areas into surrounding suburbs and rural areas
The rapid spread of rural areas into cities
The breakdown of infrastructure within cities
Air pollution caused by factories
It occurs as populations grow exponentially.
It expands the city limits.
It provides more opportunities for additional farming.
It increases the amount of paved surfaces in an area.
Heat island effect
Build-up of human waste
Increased carbon dioxide emissions
Lower temperatures in urban areas