To what extent should the NLRB get involved in determining bargaining units? Should not the cote be in the unit preferred by the employees?

This is for an Fair Practices--Labor Relations in the Public Sector Class

Each one below need to be answere in grave detail. 

Each one should be a Paragrapgh per question with APA formatting.  This assignment for all below should not be more than 1 page total.

These are just Discusiion question.

NLRB and Bargaining

To what extent should the NLRB get involved in determining bargaining units? 

Should not the cote be in the unit preferred by the employees?

Manufacturing/Service Ind

Would you expect a stronger anti-union response from an employer in manufacturing or an employer in a service industry? Why?