explain why do lichens not occur in Delhi whereas they commonly grow in Manali and Darjeeling.2) describe in brief what is the role of nitrogen fixing bacteria and lighting in nitrogen fixing .please don't give useless answer otherwise it would be reported
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lichens are found to be very sensitive to the levels of contaminants like sulphur dioxide in the air. As Delhi have high level of pollutants in air, lichens aren't found there whereas in Manali or Darjeeling level of contaminants is less therefore there lichens are found there.
PeehuChouksey:
Idk the 2nd ans. , but I hope my first part of your question helps.
help you*
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