Buddhism contains concepts of circular causality and the internal self-consistency of the universe, which really only mixed with Christian and Islamic culture within living memory. I don't think that the arrival of green ecological awareness and Buddhism in the 1960s was a co-incidence. So the individual rituals and shalt-nots of individual religions aren't as important as the mass sociological and historical effects of their mixing. In Tehran it is immoral for a woman to go around with her face uncovered. In London it is not.
Morals are arbitrary, robotic, prescriptive behavioural tramlines.
Conscience is something different. Our experience of conscience is primarily aesthetical, and can be described as that behaviour which provides the optimal nett game theoretical payoff. Stealing food from children is unaesthetical in London and Tehran at the same time. People suffering from M0 really aren't very good at appreciating feedback effects. They can only think one step ahead.