Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Great Smoky Mountains National Park' has mentioned 'Plant' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| [citation needed] The plant hardiness zone at Clingmans Dome Visitor Center is 5b with an average annual extreme minimum temperature of -14.3xc2xa0xc2xb0F (-25.7xc2xa0xc2xb0C). | WIKI |
| Air pollution from outside park boundaries diminishes park views, damages plant life and degrades high elevation streams and soils. | UNESCO |
| Non-native insects and invasive plant species threaten forest health, with potentially serious impacts on several tree species including hemlock, fir and ash. | UNESCO |