Mesosociology essay about Sociology

The essay consists of three themes. Read the questions carefully. Essay should be about 7 pages. (Reference list and cover page are not included in the total number of pages allowed).  Write with 1½ line spacing, font size 12, Times New Roman font.  1. Carnegie School and organizational ecology? 2. sociological network analysis? 3. theory of collective discrimination and the theory of Devaluation?