what are three reasons y nuclear weapons should be banded and how are they dangerous?

Answer 1

Three reasons why they should be banned? (Be careful of spelling; it'll affect any searches you do on search engines.)

When I searched at http://www.google.com for nuclear weapons, here are the results:
http://www.google.com/search?q=nuclear+weapons&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA There are several articles in here that should help.

I also searched for nuclear weapons banned, and here are these results:
http://www.google.com/search?q=nuclear+weapons+banned&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

And then I searched for nuclear weapons dangers, and here are the results:
http://www.google.com/search?q=nuclear+weapons+dangers&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

You should find plenty of information in these search results.

=)