Reproduction occurs through sexual reproduction between males and females or asexual reproduction. In sexual reproduction, males produce sperm cells and females produce egg cells, which fuse during fertilization to create offspring. The main differences between human males and females are their reproductive organs, called primary sex characteristics, as well as secondary sex characteristics like muscle mass, voice, and facial hair. The male reproductive system includes the testes and penis to produce and deposit sperm. The female reproductive system includes ovaries, fallopian tubes, uterus, vagina, and vulva to create eggs and support embryo development. Humans experience different stages of development from childhood to old age, each with distinct physical and psychological characteristics.

1. REPRODUCTION

2. Reproduction
 Reproduction is the
process by which living
thing produce offspring.
 Sexual reproduction
needs two individuals of
different sexes to
produce offspring:males
produce male sex cells,
called spermatozoa,
females produce female
sex cells, called ova.

3. Reproduction
 Humans beings use
sexual reproduction.
Male humans are
called men and
female humans are
called women.

4. Reproduction
The main difference
between men and
women is their
reproductive organs
also known as primary
sexual characteristics.
But there are also
secondary sexual
characteristics that help
us to distinguish
between men and
women (muscles,
voice , facial hair).

5. The male reproduction system
The function of the male reproductive system is
to produce sperm and deposit them in the
female's reproductive system.
The two most important organs are thed testicles
and the penis.

6. The female reproductive system
The female reproductive system creates ova and
protects the embryo.
Organs:ovaries,Fallopian tubes, uterus, vagina
and vulva.

7. From hildhood to old age
 Everybody goes
trough different
stages ,but everybody
does it at their own
place and in their own
way.

8. Childhood
 Babies grow very
quickly. In this period
they learn how to talk
and walk.

9. Adolescense
 Puberty is the time
when the
adolescense begins
and it is a process of
big physical
changes .It lasts
about 4 years.This
stage is when girls
become women and
boys became men.

10. YOUNG ADULTHOOD
 Our bodies stop
growing but our
character, tastes and
relotionships continue
to developed fully and
experience few
changes

11. Old age
 Old people have a lot
of life experience.
 Our bodies lose the
hability to repair
themselves

12. fin
Realizado por maria de lara y antonio
De sexto curso del colegio alfares
lol