____________________
beings
have
sexual
____________________
.
This
involves
two
people
of
different
sexes
.
There
are
two
reproductive
systems
,
____________________
and
male
.
Each
produces
different
____________________
cells
.
These
cells
are
involved
in
reproduction
.
The
reproductive
____________________
develops
during
____________________
.
____________________
occur
in
our
bodies
that
make
reproduction
possible
.
Puberty
usually
begins
around
the
____________________
of
10
.
