creative commons attribution license

I have downloaded a creative common video. I want to re upload it to my channel. But there are so many links in the description of the original video. Should I add those links to re uploaded video? Or can i upload with my links?

I saw some of the big channels making their video's license to creative commons. Can they still earn with that?

hi everybody I am wondering: can i extract any audio from a video which is attributed as "Creative Commons Attribution license" and i use it accordingly within my video content. ???? My main concern is: if that video which already used a copyrighted audio file within its content, then how it...