No,everything does not have a copyright. Grass, clouds, my third grade book report, the song of a cricket, not copyrighted.
Everything written or recorded since 1923 is affected by copyright laws.
Everything published in the United States before 1923. Everything copyrighted in the United States before 1951 where the work required copyright renewal before 1978 and the copyright was not renewed.
Unless otherwise specified, virtually everything you encounter on the internet is protected by copyright and cannot be copied, altered, or further distributed without permission of the copyright holder.
It would have a copyright. The story and cartoon is new and wouldn't be in the public domain yet.
No, everything on the web is not copyrighted. You have to claim copyright by placing a copyright symbol or getting a license claiming it's protected.
Virtually everything you encounter online is protected by copyright, unless otherwise specified. Notification is not required for protection.
Because copyright protection is automatic, virtually everything you encounter online will be protected. The exceptions would be works created by the federal government, and works donated to the public domain by their creators. On YouTube, it is safe to assume that everything is protected by copyright unless explicitly stated otherwise.
Because protection is automatic, a notification is not required: everything is protected by copyright unless it specifically says otherwise.
If everything in it is your own original work, yes.
Safest to assume everything is unless it says otherwise.
Everything you write or create automatically has a copyright. However, the terms of service of most forum accounts require that you forfeit your copyright. Furthermore, claiming copyright on a forum post would be fairly pointless, as most copyright claims are only legally actionable if their is proof of commercial damages.
Nearly everything, unless explicitly stated otherwise. The link below (to Project Gutenberg) gives an example of materials that would not be protected by copyright.