An "endangered" species is one which is in danger of extinction throughout at least a significant part of its range.
(An "endangered" species; is; one which is in danger of extinction throughout at least a significant part of its range) (one; is; in danger of extinction; T:throughout at least a significant part of its range)
An "endangered" species one
is is
one which is in danger of extinction throughout at least a significant part of its range
in danger of extinction T:throughout at least a significant part of its range