A plot of the Environment Performance Index (EPI) scores for nations on the vertical axis and corresponding GDP per person on the horizontal axis shows that as:

A firm in perfect competition is a price taker because

A) there are no good substitutes for its good. B) many other firms produce identical products. C) it is very large. D) its demand curves are downward sloping. E) its demand curve is vertical at the profit-maximizing quantity.

An increase in the quantity of resources available

A) shifts the PPF leftward. B) shifts the PPF rightward. C) moves the economy to a new point up along a given PPF. D) moves the economy to a new point down along a given PPF.