The quote is by abraham lincoln
Explanation:
sorry if it is wrong put they are both different
Answer:
c. Observational studies have both independent and dependent variables.
d. Observational studies can be used to test hypothesis.
Explanation:
Observational studies are ones in which a researcher makes observations about his thoughts and views. He observes the risk and other effects before actual test takes place. This is usually the initial phase of research where observations are made for suitability of certain things that are to be researched. There is initial feasibility test conducted to identify whether the further research process is beneficial or not.
Answer:
Ok. I think he fell off of something (cliff, plane)
Explanation:
And the package. something he was just carrying. Or a parachute
Answer:
Noel hypothesis.
Explanation:
The theory that best explains segregation under these conditions is the <em>Noel hypothesis</em>. The Noel hypothesis claims that if there is contact of groups were there is ethnocentrism, competition and differential in power, some dominant-minority group will be created. This will lead to inequality. Ethnocentrism is the belief in the superiority of our race and culture. It can make us view the other race as inferior. The three components of this hypothesis were present during the Jim Crow era.