Most
animals
reproduce
____________________
.
Individuals
can
be
either
____________________
or
____________________
.
Males
have
testicles
,
which
produce
____________________
.
Females
have
internal
ovaries
,
which
produce
____________________
.
In
some
animal
species
,
an
animal
can
be
both
____________________
and
____________________
.
They
have
both
testicles
and
ovaries
.
These
animals
are
called
____________________
.
There
are
two
types
of
fertilization
:
____________________
and
____________________
.
Internal
:
During
sexual
union
,
or
____________________
,
the
male
deposits
sperm
inside
the
female's
____________________
.
External
:
It
occurs
in
the
____________________
.
The
females
deposit
the
____________________
in
the
water
and
the
male
deposits
____________________
.
The
sperm
____________________
the
ova
.
