Which of the following definitions describes a noun?

Adam posted in a thread about theoretical physics. in his post he refuted general relativity and cited a paper that was recently self-published by one person on her own personal website and had no references to other works in the field.which important question did adam not answer sufficiently when evaluating the cited paper?

What key details should be included in a summary of the introduction to "boat inspection and cleaning procedures for all watercraft owners"? write an objective summary based on evidence from the text. your response should be at least one complete paragraph.

How does the poem's mood and tone change in each of these stages of “o captain! my captain! ” by walt whitman? (i need an answer asap )