The Universe has cooled as it has expanded.

Elements heavier than iron were created during the Big Bang.

eBay creates value by:

Use the following to answer questions 21-22.  Figure: Gains from Trade (Figure: Gains from Trade) Refer to the figure. What are the unexploited gains from trade at the free market equilibrium?

The basic postulate of economics indicates that changes in incentives influence the:

Which is a positive economic statement?

Use the midpoint method to answer this question. When a good’s price increases from $20 to $30 and its quantity demanded decreases from 100 to 90, using the midpoint method, the elasticity of demand for that good is

Consider the (world) market supply curve for oil. Saudi oil production inhabits the _____ part of the curve, and Canadian oil production inhabits the _____ part of the curve.

(Table: iPhone and iPod Production) Assuming both the United States and Canada  specialize in the good for which they each have comparative labor advantage, which of the following answers identifies a trade price that both countries would find acceptable? (Assume each country has 12 laborers.)

Are earbuds, headphones or ear devices allowed while taking test or recording oral presentations.