Answer: Observational Study
Explanation: An experiment requires a scientist to observe subjects of the study under specific conditions where an independent variable is involved and controlled by the scientist.
An observational study on the other hand is in an uncontrolled environment and the scientist does not have any control on the variables. An example is polls. The purpose of this type of study is to get statistical values without interfering with the the subjects of the study.
"If anything, a cartel is likely to collapse and lose power over time".
The appropriate response is self-fulfilling prophecy. A self-fulfilling prophecy is a forecast that straightforwardly or in a roundabout way makes itself turn out to be valid, by the very terms of the prediction itself, because of positive criticism amongst conviction and conduct.
Answer:Sparta was ruled by two kings while Athens were ruled by archons.
As I said in the last one, Brainly is meant for help not a do it for me purpose. Read the chapter, read the questions, answer the questions, and go and write the paragraph
