Are there any online Nystrom World Atlas. I forgot may book at school and can't do my work without it.

Very few textbooks are online; the few that are require a username and password, usually provided by your teacher. Here's an example:
http://worldatlases.com/

You might be able to find some help here:
http://www.nystromnet.com/

=)

why is it so hot at the equator?