[Kath]

But neither Nature or Nurture can explain why humans grow to be the way they are alone. Only by combining the two do you get a reasonable explanation, so it is likely that the same would be true for orcs.

Therefore if an orc was orphaned as a child and brought up by humans it would retain some of the innate things that make it an orc, that have been there since birth, such as the way it looks (to some extent as though that is genetic it can be affected by the environment) or how quickly it picks things up. However, things like the language it speaks, the morals it learns, those are nurture and are dependent on the family it is brought up in.

So if it were brought up in an 'evil' human family it would be 'evil, but if it were brought up in a 'good' human family it should be 'good' as well. But if things such as temper and basic knowledge of right and wrong are innate there would be times when it would appear evil.