Answer: The first one is 4, the second one is 1, the third one is 3, the fourth one is 2.
Explanation:
It is a compound sentence, because this sentence consists of two independent clauses ('the lamp fell over' and '(the lamp) scared the cat"). Simple sentence would have only one independent clause.
Answer:
Advantages: Secondary sources provide a variety of expert perspectives and insights. Also, peer review usually ensures the quality of sources such as scholarly articles. Finally, researching secondary sources is more efficient than planning, conducting, and analyzing certain primary forms of research.
Explanation:
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