Is That Website Good?

Is That Website Good?

I am planning to use World Book Online, Discovery, and National Geographic.
World Book Online is a good sites because it is not wrote by a 7th grade student, it is wrote by many professors.
I think Discovery is a good site because this site is about animals, and I'm researching about animals. And it is a channel on TV.
I think National Geographic is a god site because this site is about animals too. And National Geographic publication many magazine about animals and TV show.