Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Lake Turkana National Parks' has mentioned 'World' in the following places:
Occurrence Sentence Text Source
It also contains fossils in the Koobi Fora deposits which are unique in the world.
The Lake is the most saline lake in East Africa and the largest desert lake in the world, surrounded by an arid, seemingly extraterrestrial landscape that is often devoid of life.
The Kobi Fora deposits contain pre-human, mammalian, molluscan and other fossil remains and have contributed more to the understanding of human ancestry and paleo-environment than any other site in the world.
It is an important habitat for hippopotamus and the worldxe2x80x99s largest colony of crocodiles (and the largest Nile crocodile breeding ground in the world).