Yes at the options menu
No
no you can not turn off the blood its part of the game
13
go into to options to turn it off.
you can turn it off in Call of Duty Black Ops
Yes, when you start Black Ops if you want to filter graphic content like blood and gore. In the PC Version you can turn off the voices, but not the words only. In zombies though you can turn off language.
No U Cant
You can turn them all off including the blood
no you can not turn it off because its part of the game
You cannot turn off the blood but you can turn off the gore. If you turn off the gore it doesn't work in online play
I don't know how but you definitely can. Probably in the options menu.
You dont. Its a mature game.