REPRODUCTION

 

Humans are viviparous, that is, we are born from our mother´s womb.

Humas are mammals (babies drink milk from the mother's body).

Reproductive system allows us to have babies.

 1.- Before becoming a baby, humans are fetus.

2.- The fetus grows inside the mother's uterus during 9 months. This is called pregnancy.

3.- The fetus gets nutrition from the mother through the umbilical cord.

4.- The fetus is born and it becomes a baby.

5.- Then the baby grows to become an adult.

 

There are four life stages:

- Childhood: children eat and sleep and their bodies grow very fast. They play to learn.

- Adolescence: it starts around twelve years old. The body of the teenagers change a lot.

- Adulthood: it starts around 20 years old. Adults stop growing and they have babies.

- Old age or third age: it starts around 70 years old. Bones and muscles become weaker.

Exercise 1: lyfe cycle.

Exercise 2: lyfe cycle.

Exercise 3: lyfe cycle

Exercise: reproductive system.