the query was put up by a student. I know debate on and debate over are more or less the same. but there should be a difference if we use two different prepositions with them.
eg. There was a debate over the supremacy of boys over girls in the class.
or
The department of English organized a debate on the political issues of the country.
?????
so is it right that we use debate over for two issues???
what's the rule???