Lichens are found throughout world, often
occupying areas no other plant could survive. In
Antarctica there are few flowering plants,
more 400
species of lichens have been found. Only a species
survive near large cities due industrial smoke and se
gases. Air pollution poses a serious threat to lichens
Find 5 missing words ommission
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« Lichens are found on every continent and are the dominant organisms on around 8% of the world's land surface. This includes areas in the Arctic and Antarctic, and mountain tops. Lichens are found on soil, rock or tree bark.
« As with most vegetation, lichens show a range of sensitivities to pollutants. Not all lichens are sensitive to a particular pollutant, some can be remarkably tolerant. Among lichens are species that are sensitive to sulphur, nitrogen, acidity, halogens (e.g. fluoride), heavy metals and ozone.
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5 omissions are
1)the world
2)where no other plants....
3)more than 500...
4)due to industrial....
5)possess..
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