Early
____________________
life
form
was
characterized
by
____________________
lifestyles
,
____________________
and
gathering
____________________
,
and
creating
simple
____________________
.
They
lived
in
____________________
groups
and
relied
on
their
surroundings
for
____________________
.
Over
time
,
early
humans
developed
____________________
and
____________________
structures
,
paving
the
way
for
more
complex
____________________
.