Some societies, like Canada and the United States, have changed rapidly while other places, like some African nations, have seen far less change. Why are these African nations MOST likely slower to change?
ОА
African nations are generally very reluctant to adopt new policies,
ОВ.
African nations often do not have access to the resources of industrial nations.
OC. Western nations tend to keep innovations to themselves and not spread culture.
OD. Most African nations do not have the natural resources they need to industrialize.

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?

The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. they start at the left end of the court, run back and forth 6 times, then end back at the left end of the court where they began. what distance did they run? what is their displacement?

The cheetah is considered the fastest running animal in the world. cheetahs can accelerate to a speed of 20.1 m/s in 2.50 s and can continue to accelerate to reach a top speed of 28.1 m/s. assume the acceleration is constant until the top speed is reached and is zero thereafter.1) starting from a crouched position, how long does it take a cheetah to reach its top speed? (express your answer to three significant figures.) s2) how far does it travel in that time? (express your answer to three significant figures.) m3) if a cheetah sees a rabbit 120 m away, how long will it take to reach the rabbit, assuming the rabbit does not move? (express your answer to three significant figures.)