for #70 in bio final practice test 2, you have talked about the exclusion principle and how there is competition. What I don't get is why the answer is C) competition between members of the same species. I thought it was D) Competition between members of different species because according to DKPCOFGS (the Domain -->Species), paramecium aurelia and Paramecium caudatum is in the different species right? So isn't it supposed to be competiton occuring in the different species?