Ecological
____________________
is
a
series
of
steps
to
establish
or
re
-
establish
an
____________________
after
it
is
destroyed
.
The
first
species
to
live
in
a
new
ecosystem
are
called
____________________
species
,
like
lichen
,
bacteria
or
small
grasses
and
weeds
.
There
are
two
types
of
succession
:
____________________
and
secondary
.
In
both
types
,
the
number
of
organisms
start
____________________
and
over
time
____________________
until
the
ecosystem
reaches
is
carrying
capacity
-
where
no
new
species
can
colonize
.
Primary
succession
is
when
a
NEW
ecosystem
develops
,
it
is
new
because
____________________
(
dirt
)
needs
to
be
made
BEFORE
anything
else
can
happen
.
Secondary
succession
occurs
after
an
ecosystem
is
____________________
,
but
leaves
the
soil
-
like
in
the
case
of
a
____________________
.
Secondary
succession
is
much
quicker
than
primary
succession
.
since
primary
succession
requires
the
____________________
of
soil
,
which
can
take
decades
or
even
hundreds
of
____________________
.
