Mortality of large numbers of some of the best known tree species in Great Smoky Mountains National Park also can be traced to the high levels of air pollution.
(Mortality of large numbers of some of the best known tree species in Great Smoky Mountains National Park; can be traced; to the high levels of air pollution) (Park; [is] National [of]; Great Smoky Mountains)
Mortality of large numbers of some of the best known tree species in Great Smoky Mountains National Park Park
can be traced [is] National [of]
to the high levels of air pollution
Great Smoky Mountains