Rapid urbanization in poorer parts of the world leads to several environmental problems related to waste disposal, air pollution, and water pollution. Cities produce large amounts of waste that is difficult to dispose of due to lack of infrastructure and money. Waste provides income to those who scavenge and extract materials from it, but toxic waste poses serious health risks. Electronic waste disposal is a major issue as people break down devices and risk exposure to heavy metals without realizing the health effects. Overall, expanding cities strain waste disposal systems and pollute the environment due to insufficient regulations and emergency planning for their rapid growth.