'O<sub>3</sub>, aka this, can be detected many miles downwind from urban centers & can harm forest vegetation'
ozone
AH, WILDERNESS!: O<sub>3</sub>, aka this, can be detected many miles downwind from urban centers & can harm forest vegetation
O<sub>3</sub>, aka this, can be detected many miles downwind from urban centers & can harm forest vegetation
O<sub>3</sub>, aka this, can be detected many miles downwind from urban centers & can harm forest vegetation
AH, WILDERNESS!
ozone
AH, WILDERNESS!