In 1-2 sentences describe the difference between primary and secondary sources give an example of each

Primary sources are original documents or pieces of evidence created by individuals who directly experienced or witnessed an event, such as personal diaries or letters, while secondary sources are interpretations or analysis of primary sources, created by someone who was not present during the event, such as textbooks or scholarly articles.

Example of primary source: A journal article written by a scientist who conducted an experiment and published their own findings.
Example of secondary source: A review article that analyzes multiple primary sources to provide a comprehensive understanding of a specific topic within a scientific field.