Anation has a in the production of a good or service if it can produce that good or service more effectively or efficiently than it can produce other goods.

Laws that cover individuals who are injured by a product

How did ancient civilizations develope its agriculture and protect its population

As nina and erin were eating lunch in the central high school student cafeteria, they were discussing the news coverage about the girls' athletic coach being arrested for selling steroids to student athletes. "i think the guy just did it because they don't pay teachers enough money," nina suggested. "i bet the guy had some other kind of drug addiction he was trying to pay for," erin countered. nina and erin's ideas about the cause of the coach's drug-selling behavior are examples of: