“Ten companies today dominate the world pharmaceutical industry, and this number is expected to decline through mergers. --The Wall Street Journal”

The excerpt above describes an example of -
A)a monopoly
B)an oligopoly
C)a perfect competition
D)a monopolistic competition

How many people in the world’s economy work in “system d”?

When something is moving, it is in motion. pressing the gas pedal in a car will put the car in motion. two important properties of motion are speed and direction. speed is how fast an object is moving. tony and tanya both run for the same amount of time, in the same direction. tanya runs much further than tony in that time. how does tony's speed compare to tanya's speed? a) their speed is equal. b) tony is slower than tanya. c) tony is faster than tanya. d) without a stopwatch, you can't say for certain.

What is the social order of the ancient river valley civilization of mesopotamia?