Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ngorongoro Conservation Area' has mentioned 'Human evolution' in the following places:
Occurrence Sentence Text Source
It is one of the most important prehistoric sites in the world and research there has been instrumental in furthering understanding of early human evolution.
The area has been subject to extensive archaeological research for over 80 years and has yielded a long sequence of evidence of human evolution and human-environment dynamics, collectively extending over a span of almost four million years to the early modern era.
Criterion (iv): Ngorongoro Conservation Area has yielded an exceptionally long sequence of crucial evidence related to human evolution and human-environment dynamics, collectively extending from four million years ago to the beginning of this era, including physical evidence of the most important benchmarks in human evolutionary development.
The property also includes Laetoli and Olduvai Gorge, which contain an important palaeontological record related to human evolution.