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  1. ...implantation provides a place called placenta for the zygote to grow into foetus . (iii)One implantation occurs, the level of progesterone and oestrogen...

  2. Prenatal Care If you are pregnant, you need to see a doctor as soon as possible to begin getting prenatal care (medical care during pregnancy). The sooner you start to get medical care, the better your chances that you and your baby will be...