Pollution prevention reduces the amount of pollution generated by a process, whether it is consumer. In contrast to most pollution control strategies, which seek to manage a after it is formed and reduce its impact upon the environment the pollution prevention approach seeks to increase the efficiency of a process, thereby reducing the amount of pollution generated at its source. Although there is wide agreement that source reduction is the preferred strategy, some professionals also use the term pollution prevention to include pollution reduction.
*use vehicles like bike and car only for far use only.
*plant more trees
*avoid deforestation.
*usage of less water 
*save electricity through turn offing the lights and fans and etc.