Read the Twilight Saga series by Stephanie Meyer, and then you'll know!
Since the only "vampires" are a few species of bats, there's no such thing as a "half-human half-vampire," thus rendering the question moot.
Because, Bella gave birth to their child when she was human, and Edward was a vampire when they did it, so it would be half vampire, because of Edward, and half human, because of Bella. But it was only after she gave birth that Bella became a vampire. Mabey that's why you don't think that it would be half human half vampire. x
It dies.
They would just get a scar that would never go away
It's hard for them to make a baby but what would happen is that the baby well be half vampire-werewolf but the baby would then not feel the effect to wanna drink blood and if the baby doesn't drink blood at anytime soon they will become weak and cannot live properly.
No, she is a half vampire and half human...
You cannot become a Dhampir, as they are born, not made. Dhampirs are half human half vampire; their mothers are human and their fathers are vampires. They usually do not like vampires, and are vampire hunters. However you can turn into a vampire (if you happen to find one), and then it could bite you.
they are forever stuck in the age they were changed into a vampire. for example if i was 18 and i was changed in to a vampire i would be forever 18 :) (wish that would happen.. i would LOVE to be a vampire)
nothing.
Jacob never does become a Vampire, Jacob imprints on a half human, half vampire if what you were thinking about. That is why there is teams, Team Jacob (werewolf) and Team Edward (vampire) I don't think they would screw up that up with Jacob becoming a Vampire.
Renesmee is half vampire half human !
There is no such thing.Either you're a vampire or a human. If you're a human you can get changed into a vampire but you cannot be both. it would be called a dhampire it is when there is a child between both a human and a vampire (dont Know if i spelled it right