Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Cahokia Mounds State Historic Site' has mentioned 'Pollution' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| [29][30] Scholars have proposed environmental factors, such as environmental degradation through overhunting, deforestation[31] and pollution,[32] and climatic changes, such as increased flooding[33] and droughts,[34][35] as explanations for abandonment of the site. | WIKI |