LOL. But, alas, not my test. It's in every Bio 101 text book.
And, with the horse answer above, in normal conditions, humans can normally mate without the help of little pills, so they are the same species, even if help is sometimes used.
If not, I would be of a different species than a democrat, as I would not consider mating with one without the help of tequila.
That was in my Philosophy 101 book. :-}