why lichens are called indicators of air pollution
Answers
Answered by
2
Lichens are used to make litmus paper,they grow on trees trunk as a whittish greenish layer but in the presence of pollutants like -so2 and no2 their growth inhibits
Answered by
1
the hardly linches are useful bioindicators for air pollution , especially sulphur dioxide pollution , since they derive their water and essential nutrients mainly from the atmosphere rather than from the soil . It also helps that they are able to react to air pollutants all year round .
Similar questions