Final answer:
Copying sentences and putting them in quotes without providing a citation is plagiarism, regardless of the use of quotation marks.
Step-by-step explanation:
If you copy sentences from a scientific paper and put them in quotes without providing a citation, this is an example of plagiarism. Plagiarism occurs when someone uses another's work without proper attribution, even if they use quotation marks. In academic writing, it is critical to provide a citation when using someone else's words or ideas.
whether you are quoting directly, paraphrasing, or summarizing. Quoting involves using the exact language from the source within quotation marks, while paraphrasing means rephrasing the ideas in your own words, and summarizing involves condensing the main points. Each of these methods requires proper citations to credit the original author and avoid plagiarism.