Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Wet Tropics of Queensland' has mentioned 'World' in the following places:
Occurrence Sentence Text Source
The tropical forests have the highest concentration of primitive flowering plant families in the world.
Many plant and animal species in the Wet Tropics are found nowhere else in the world.
Among many emblematic species occurring in the property is the flightless Australian cassowary, one of the largest birds in the world.