Changing behavior is the third step in using ecology to move toward a sustainable future. Which of the following is the most successful example of environmental improvement due to changed behavior?

While you didn't provide us with any possible ways how one can use envrionmental improvements to change behavior one simple way that comes to mind is to create an environment where people can play different sports - this would make them go out more and create a smaller carbon footprint due to not being as much behind computers and other electronic gadgets.