2007-01-16 05:55:49 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Most likely on trees,away from industrial polluted areas.Lots of lichen on west coast of Ireland.Very little or none in eastern Europe,where prevailing winds carry pollution.You may find some on roof tops but unlikely on pavements,in western areas.
2007-01-16 06:08:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
lichen tends to grow better on trees, but good air quality is required, in WW2 roofs were sprayed with manure in rural areas to help speed along growth on lichen for camoflage.
2007-01-16 06:02:18 · answer #2 · answered by tommo 2 · 0⤊ 0⤋
Trees, but have seen them on roofs.
2007-01-16 06:03:27 · answer #3 · answered by tagette 5 · 0⤊ 0⤋
From experience, I would say trees.
2007-01-16 06:01:29 · answer #4 · answered by gebobs 6 · 0⤊ 0⤋
TREES BUT ONLY IF THE AIR QUALITY IS GOOD!
2007-01-16 06:04:59 · answer #5 · answered by ann w 2 · 0⤊ 0⤋
trees!
2007-01-16 07:07:03 · answer #6 · answered by soccercam14 2 · 0⤊ 0⤋
If you get them on your head see a chemist.
2007-01-16 06:05:53 · answer #7 · answered by Anonymous · 0⤊ 0⤋