Endangered
species
____________________
those
considered
to
be
at
____________________
of
extinction
,
meaning
that
there
are
so
few
left
of
their
kind
that
they
could
disappear
from
the
planet
altogether
.
____________________
species
are
____________________
by
factors
such
____________________
habitat
loss
,
hunting
,
disease
and
climate
____________________
,
and
usually
,
endangered
species
,
have
a
declining
population
____________________
a
very
limited
range
.
Shockingly
,
current
estimates
suggest
that
____________________
third
of
the
world's
amphibians
,
a
quarter
____________________
all
mammals
____________________
one
in
eight
birds
are
endangered
.
