Explain what "peer reviewed" means for scientific literature
Explain the difference between primary and secondary sources.
Peer-reviewed means that the article is written by experts and is reviewed by several other experts in the field before the article is published in the journal. This process ensures the article's quality and scientific value.
Primary sources provide the original discoveries and events described by the author of the study. Secondary sources involve analysis, evaluation and interpretation of the primary sources and already published results.