Explanation:When an option is chosen from alternatives, the opportunity cost is the cost incurred by not enjoying the benefit associated with the best alternative choice. opportunity cost is the return of a forgone option less than the return on your chosen option. It should’ve noted that opportunity cost can guide an individual to more profitable decision making. It involves assessing the relative risk of each option in addition to its potential returns. Every time you make a choice , you’re weighing the opportunity cost of that action. Opportunity cost includes all real cost of making one choice over another choice , including loss of time , energy, and a derived pleasure.
So how can China produce enough safe food for its growing population if they all start eating like Americans? The simple answer is it can't. It takes about 1 acre (half a hectare) to feed the average U.S. consumer. China only has about 0.2 acres of arable land per citizen, including fields degraded by pollution.
The development of new cities-Louisville, Cincinnati, St. Louis, and Buffalo-away from the Atlantic coast was possible because they had access rivers that made it easy for them to trade.