Fertilization process from cellular level to fetus

  READ Ethical and Religious Directives (ERD) for Catholic Health Care Services (6th ed.). (2018). PART FOUR: Introduction Assignment below Explain the following concepts: Asexual - sexual reproduction. Mitosis – Meiosis Diploid - Haploid Gametes Fertilization Zygote Syngamy Blastocyst Implantation Gastrulation Embryo - Fetus Explain fertilization process from cellular level to fetus (as per video time 1:08:00) After learning about fertilization process, and according to nature and objectively, and scientifically speaking, when does human life begin? Why?