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Is it necessary to cite information that is common knowledge or widely accessible, like historical information or popular scientific information, e.g. 70% of the earth is covered in water?

User Sakabako
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Answer: No

Step-by-step explanation:

In academic writing, common knowledge refers to information found in multiple sources without a distinct origin, data that any educated person can consider valid without a source reference. For example, well-known historical dates and long-established ideas for a specific field, like key equations in physics. Observations recognized as common knowledge don´t need a citation.

User Haoqun Jiang
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