This Question Contains Two Parts;be Sure to Answer Both

Essay

This question contains two parts;be sure to answer both.First,what is punctuated equilibrium? Second,explain how the development of car-sharing services in major urban areas,such as ZipCar,punctuated the equilibrium for well-established car-rental companies like Hertz and Avis.(With ZipCar,people pay a monthly fee to join the service;they can then reserve cars by the hour or by the day,and pick them up in convenient locations.The process is much easier,with much less hassle,than going through a traditional car-rental company. )