Reproduction begins with fertilisation.
The next stage is pregnancy.
The final stage is birth.
Fertilisation is when a sperm joins an egg.
When sperm joins an egg, a baby starts to grow in the uterus.
Pregnancy is when the baby develops in the uterus.
A human pregnancy lasts nine months.
Birth is when the baby leaves the uterus and is born.
Human reproductive system & Childbirth
Informative 3D animation for everyone
Source | ePainAssist
Human reproduction and childbirth
Source | Human Relations Media
Nine months in the womb
A remarkable look at fetal development through ultrasound
Source | PregnancyChat
Life before birth – In the womb
The development of the growing fetus from conception to delivery.
Source | Naked Science
NATURAL SCIENCE #2 