Explanation:
It should be D.) dams on the Colorado River
sorry if I'm wrong
I believe the answer is: Interaction between people
Simmel focused his life on researchers to study different type of social interaction that people do with one another. He consider things such as psychology, economics, culture, and sociology as crucial factors that motivate people to interact with one another.
Answer:
They move side to side
Explanation:
yes they are produced through side by side motion of particles.
