What are some draw backs to living in the cite as aposed to the country

Why was the moon important to kennedy and the nation

What interest on the part of each group led residents of turkey creek in gulfport mississippi to form a coalition with the national audubon society?

One drawback of voluntary trade is that it a. requires two groups to use a common language b. can make one group dependent upon another for necessary goods c. doesn't occur unless there is a shortage of goods for at least one group d. forces groups to rely on themselves to produce all the goods they need