Although Los Angeles is infamous for its air pollution and smog, there are many parts of Los Angeles where the air is quite nice, especially in the mountains and by the sea. However, the people who live in these places are disproportionately white; the people who live in the places with the worst air quality are disproportionately likely to be racial and ethnic minorities. This is an example of .
A. conservation. B. sustainable development. C. environmental racism. D. environmental justice. E. grassroots organizing.

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.