1) Orcs are Elves corrupted by Morgoth: do they retain the Elvish immortality; ie, do Orcs live indefinitely free from age and disease, like Elves do, assuming they are not killed by violence?
2) If Morgoth can't create life, how did he create the Trolls? They are supposed to be created from stone in mockery of the Ents, but how did Morgoth do this, without creating life?
3) Can certain persons please take their incessant Islam-bashing to non-Hobbit Hole threads, please?
Off the top of my head, it seems like Tolkien was leaving the Orcs ambiguous. Made from Elves or made from Men? The common conclusion is they are from Elves, but I don't think that that is directly spelled out by Tolkien.
Haven't thought any about the Troll origins. Like I said, I'll see what I can find.