Skipping my argument to ask "what is a human" is a dodge, not a rebuttal. Fine, I'll play: a human is a person with a life they're living, and the question cuts against you, because a pregnant woman is one too. You can't answer the personhood question for a zygote while ignoring the person carrying it. My point stands unanswered: banning abortion doesn't save lives, it kills women. So until you address that, your question is just a smoke screen.