All
____________________
____________________
perform
specific
functions
,
called
____________________
____________________
.
These
functions
include
:
a
.
____________________
:
To
transform
____________________
into
simple
substances
and
get
____________________
from
them
.
b
.
____________________
:
The
ability
to
____________________
changes
in
the
____________________
and
inside
the
____________________
and
to
____________________
to
them
.
c
.
____________________
:
It
enables
living
this
to
produce
____________________
.
