Comparative advantage occurs when a person or a business focuses on providing one product or service they are good at true or false?

How does district of columbia v heller relate to federalism

Wich characteristics make the long ballot ineffective

Because of the housing bubble, many houses are now selling for much less than their selling price just two to three years ago. there is evidence that homeowners with virtually identical houses tend to ask for more if they paid more for the house. what fallacy are they making?