How do babies grow from an egg to a baby?

Babies don't grow from an egg like birds or reptiles do! Humans are mammals, and we develop inside our mothers' bodies. Here's how it works:

1. Fertilization: It all starts with a sperm cell from the father meeting an egg cell from the mother in the fallopian tube. This is called fertilization.

2. Zygote: When the sperm and egg combine, they form a single cell called a zygote.

3. Implantation: The zygote travels down the fallopian tube and implants itself in the lining of the mother's uterus.

4. Embryo: The zygote begins to divide and grow into a ball of cells called an embryo. This is when the baby's organs and body systems begin to form.

5. Fetus: After about 8 weeks, the embryo is called a fetus. It continues to grow and develop inside the mother's womb, protected by a sac of fluid called the amniotic sac.

6. Birth: After approximately 40 weeks of pregnancy, the baby is born.

So, instead of an egg, a baby grows from a fertilized egg cell that develops inside the mother's womb. It's a beautiful and fascinating process!