extra Flashcards
(6 cards)
1
Q
what is ozone, O3
A
an allotrope of oxygen
2
Q
what is good about O3
A
in the stratosphere prevents harmful UV light reaching organisms on earth
3
Q
what is bad about O3
A
in the troposphere has harmful effects on respiratory tracts of animals
4
Q
uv-a
A
reaches earths surface, less energy so less damaging
(responsible for skin aging)
5
Q
uv-b
A
some reach earths surface, more energy so some damage
(sunburn and cancer)
6
Q
uv-c
A
screened out entirely by ozone layer, potentially very damaging
