The market mechanism may result in socially undesirable outcomes that do not achieve efficiency, environmental sustainability and/or equity.
Market failure, resulting in allocative inefficiency and welfare loss.
Resource overuse, resulting in challenges to environmental sustainability.
Inequity, resulting in inequalities.
Governments have policy tools which can affect market outcomes, and government intervention is effective, to varying degrees, in different real-world markets.
FYI you have your own copy of all of these documents in Schoology
PS put on hold exploring indirect tax and cigarettes for now, we do that in the next unit.