Which of the following is an example of a trade barrier?
capitalism
capitalism
tariff
tariff
gross domestic product
gross domestic product
comparative advantage
tariff
Which of the following drives the free market economy?
the needs and wants of the people
the needs and wants of the people
the supply of goods in the market
the supply of goods in the market
the number of consumers in the market
the number of consumers in the market
the gross domestic product
the needs and wants of the people
Which term describes the choices that people must make to meet their wants and needs?
supply
supply
demand
demand
opportunity cost
opportunity cost
producers
producers
opportunity cost
Use the drop-down menu to complete the sentence.
One disadvantage to using a primary source, such as a letter or diary is _______
A. the source could be lost
B. the source could contain bias
C. the source may not be well-written
D. the source could be inaccurate.
B. the source could contain bias
What function do the alveoli perform?
carry oxygenated blood away from the heart
carry oxygenated blood away from the heart
exchange oxygen in the blood for carbon dioxide in the air
exchange oxygen in the blood for carbon dioxide in the air
exchange oxygen in the air for carbon dioxide in the blood
exchange oxygen in the air for carbon dioxide in the blood
hold receptors for the sense of smell
exchange oxygen in the air for carbon dioxide in the blood
Which organ of the respiratory system is located inside the lungs?
trachea
trachea
larynx
larynx
nasopharynx
nasopharynx
bronchioles