In economics, what is the difference between ‘use value’ and ‘exchange value’?

(1) In economics, what is the difference between ‘use value’ and ‘exchange value’? Explain.(2) What needs must be balanced to achieve the goal of environmental ‘sustainability’? Explain.(3) What challenges does consumerism pose for the goal of environmental sustainability? Explain.Explain.(4) Explain the basic ideas underlying the Harm Principle.*(5) How does Mill support his claim that “trade is a social act”? Explain.*(6) Why is Mill generally opposed to government restraints on business? Explain.(7) What is ‘multi-level marketing’ and what ethical challenges does such a business structure present? Explain.