3 ms·
> if you speak of group A going extinct and group B not, you are implicitly defining them as separate species I don't see how this follows. I've definitely be
by krageon 7y ago
> if you speak of group A going extinct and group B not, you are implicitly defining them as separate species
I don't see how this follows. I've definitely been in biology classes where we discussed different groups of rats in this way and we never considered them separate species just because they were different groups.