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Some weaknesses of communism are that it removes the price system, eliminates incentives, reduces prosperity and severely restricts personal freedom. Communism was once a dominant economic system, but as of 2014, it has been largely discredited.
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The correct answer is Saudi Arabia.
Reviewing information on majors such as its introductory courses, required courses, and office location is described as conducting preliminary research.
Research that is preliminary is research whose findings are not conclusive and whose information needs to be confirmed. This type of study is typically done to learn more about a specific subject and to gauge the amount of material that is available.
Selecting an intriguing topic is necessary for conducting preliminary research. Developing a research question requires gathering sufficient background knowledge about the subject. As a result, the researcher may concentrate on gathering the precise data they need. A preliminary research topic might be elevated to established research if the facts are verified by the results of the subsequent investigation.
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Groups use varied methods to try to achieve their aims including lobbying, media campaigns, publicity stunts, polls, research, and policy briefings.
Answer: coal burning factories and increased automobile usage has caused air pollution
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