Two firms, Boeing and Airbus, produce most large passenger airplanes. It costs billions of dollars to develop a new type of airplane. One airplane can cost more than $260 million. The competition between these two firms is fierce. Is this an example of perfect competition? Why or why not?

What was the most common destination for african american migrants between 1910 and 1930

Which of the following statements os an example of how climate and vegetation influence lifestyles? a. many south koreans enjoy watching american films and listening to american music.b. many mongolians are pastoral nomads who raise livestock for a living.c. many chinese peasants are moving to cities in search of better jobs opportunities.d. many north koreans wish to see relatives now living in korea.

Synthesizing new ideas from a speaker with what one already knows about the subject to see if the information makes sense is an example of a.questioning and challenging b.identifying differences c. forming a statement d.seeing the boader context