It varies a lot. Sometimes the anime adaptation can be just as good or even better if the team does a great job. But in some cases, it might not live up to the manga's quality due to constraints or creative choices.
Not all anime come from manga. Some are original creations, while others might be based on light novels, video games, or even real-life events.
Not all do. Some anime make significant changes to the story or characters from the manga.
The answer is no. There are a large number of light novels out there, and only a fraction of them get turned into manga. Some light novels might be too niche, or their content might not be suitable for the visual and often more mainstream - oriented manga format. Also, the process of adapting a light novel into a manga requires resources like artists, publishers willing to take the risk, etc., which means that not all light novels will end up as manga.
Not all anime are based exactly on the manga. Sometimes, there are changes made for various reasons like creative decisions or to fit the animation format better.
Sure. Manga artists have a major impact. Their style, story concepts, and character developments guide the anime production team. Also, their popularity can attract viewers to the anime.
Not all of them. Some anime take inspiration from manga but might make significant changes or additions to the story.
It usually happens when the manga gains a lot of popularity and catches the attention of anime producers. They see the potential for a successful adaptation and start the process.
Yes, there often are. Many 12-episode anime have corresponding manga.
No, they're not the same. Manga are comic books, while anime are animated shows. They have different mediums and ways of presenting stories.
It varies. Some manga artists watch the anime to see how their vision is translated and to get feedback. Others might avoid it to maintain their own creative independence and not be influenced by the adaptation.