I would say that our moral intuitions are a combination those social factors and evolutionary ones, but that is only an issue if we think our moral intuitions are a good indicator of moral truth. Given where our moral intuitions come from and how inconsistent they are, I think we can safely say that moral intuitions are not a good indicator of moral facts.
Saying "Objective biology based aspects" suggests to me that we might be taking quite different metaethical approaches that may need to be made explicit to avoid talking at cross-purposes with one another. I would say that moral facts, if they exist at all, are objective and universal facts that apply to all free, rational agents across all possible worlds. That perspective isn't really connected with what things happen to harm cooperative species. I suspect you are of a different metaethical view, would that be fair to say?