2. What are the similarities and differences between the theories of Maslow and Herzberg?

The similarities are as follow:

Both theories confer that a specific set of needs must be met in order to propiciate behavior, and maintain it. In Manslow's theory, it is through a Hierarchy of Needs.  In Herzberg's theory it is through a 2 way paradigm in which two specific needs must be met and they are hygiene (basic physical and psychological needs) and motivation.

The main difference is that Manslow is more specific in terms of categorizing the areas of human need and includes less concrete areas such as emotions and other feelings. Herzberg is more specific in what psysiological and concrete things must be present to produce motivation. Also, Herzberg's ultimate goal is for motivation to be the prevailing attitude among individuals (quite clearly a need for a good quality of life), while Manslow's main goal is for needs to be met in order for an individual to develop in a healthy mental and physical way.