Identify a growth industry, a mature industry, and a declining industry. For each industry,identify the following:

Identify a growth industry, a mature industry, and a declining industry. For each industry,identify the following: (a) the number and size distribution of companies, (b) the nature of barriers to entry, (c) the height of barriers to entry, and (d) the extent of product differentiation. What do these factors tell you about the nature of competition in each industry? What are the implications for the company in terms of opportunities and threats?