I need help with this science question

How does specialization enable countries to trade with one another? a country can make and sell goods affordably and buy goods that it is inefficient at making. a country can make what it chooses and sell its goods to other countries. a country can decide to buy everything it needs from other countries. a country can efficiently make goods that were once difficult to make.

Attitudes toward homeless people. negative attitudes toward poor people are negative when a person is homeless? to find out, a common. are attitudes more description of a poor person is read to subjects. there are two versions of this description. one begins jim is a 30-year-old single man he is currently living in a small single-room apartment the other description begins jim is a 30-year-old single man. he is currently homeless and lives in a shelter for homeless people. otherwise, the descriptions are the same. after reading the description, you ask subjects what they believe about jim and what they think should be done to 26 him. the subjects are 544 adults interviewed by telephone. outline the design of this experiment.

How does the principle of federalism affect the u. s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d. it divides the federal and state governments into three branches