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The Appalachian Mountains stream from Georgia northeast into central Alabama.
A person who clarifies key issues for a group has taken on the role of <span>Information Seeker or Information Giver.
</span>This role is part of group that asks for clarification of suggestions , for authoritative information and facts pertinent to the problem being discussed. The Information giver<span> provides factual </span>information<span> to the group.</span>
Answer: An observational study, the researchers do not control treatment, and in experiment that they do.