Huh? Since when is a zygote not alive? It has a cell membrane, contains genetic material, has metabolism, can maintain homeostasis, and can grow. That's pretty much the definition of life.

Do you also think neurons, muscle cells, etc are also not alive?

The abortion debate is not about whether or not the thing that gets removed during abortion is life--I doubt you can find any competent biologist who would say it is not--but rather whether that particular cell or group of cells should be treated different than other cells or groups of cells in your body.

E.g., why should abortion be any different from removing tonsils or from circumcision, both of which also involve the removal and death of living cells from the body?