sentences:  Also, the article suggests that if a policy protects the natural environment but negatively affects those who in the reach of the enforcement of the policy, that policy is subjected to revaluation.Researchers suggests racial and socioeconomic disparities in exposure to environmental hazards describing the demographic composition of areas and their proximity to hazardous sites.Then, any improvements of a social policy and models that are generated by these improvements should reflect the policy-makers' and researchers' environmental justice beliefs.