Assertion: hiker's impact | /r/HasProperty | worsening air quality
Facets:
Source sentences:
text: For several reasons, this conclusion is not justified: (1) as they reported, all recreationists drive the sheep away from parts of their habitat, causing loss of energy as well as habitat; (2) permitting bikes causes the total number of visitors to increase significantly; (3) bikes can't travel alone -- they require motorized support vehicles, further increasing impacts (e.g. worsening air quality); (4) there is nothing to prevent mountain bikers from getting off their bikes and approaching the wildlife;