The Dust Bowl was an environmental disaster caused by? dry topsoil
static electricity
extended drought and high winds
all of the above

An externality can be created by a. people working at a production job and enjoying their work b. a production activity but not a consumption activity c. a consumption activity but not a production activity d. a production activity or a consumption activity externalities a. are always positive, and an example is flu vaccinations b. are always negative, and an example is the pollution created by trucks c. can be negative or positive. logging has a negative externality, and education has a positive externality d. can be negative or positive. a negative externality is having to go to school when you would rather go to the beach, and a positive externality is spending time with your friends

The free enterprise system is: a. supply and demand b. designed to protect c. requires both sides of the story d. free of competition

This graph shows the marginal cost of producing each additional pair of running shoe inserts .whoih pair of shoes had a marginal cost of $3.00?