A National Park Service expert explains how plants can be used to monitor the effects of ozone damage on vegetation.
15 seconds
Video courtesy of Mackenzie Reed
View Usage Information
Multimedia credited to NPS without any copyright symbol are public domain. Multimedia credited with a copyright symbol (indicating that the creator may maintain rights to the work) or credited to any entity other than NPS must not be presumed to be public domain; contact the host park or program to ascertain who owns the material.
« Hide Usage Information