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: The discovery of gold nuggets in Sacramento Valley which came to be known as The California Gold Rush.
Answer:
The term is corrections.
Explanation:
In criminology, the variety of programs, organizations, facilities, and services in charge of managing the people accused or convicted of crimes is called corrections. From that definition, we can see "corrections" is an umbrella term, unfolding into different categories. It includes, for instance, prisons and community service, or the very people responsible for supervising the criminals.
Answer:
Society is helping parents
Answer:
it starts in the air then it bounces of water which is refraction
