Question

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

Answer 1

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

When I searched at http://www.google.com for <b>nuclear weapons</b>, 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 <b>nuclear weapons banned</b>, 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 <b>nuclear weapons dangers</b>, 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.

=)