Question

Activity
14.6
Organisms called lichens are found to contaminants like sulphur dioxide in be very sensitive to the levels of the air. As discussed earlier in section 7.3.3, lichens can be commonly found growing on the barks of trees as a thin greenish-white crust. See if you can find lichen growing on the trees in your locality.

1) Compare the lichen on trees near busy roads and trees some distance away.

2)On the trees near roads, compare the incidence of lichen on the side facing
the road and on the side away from the road.

What can you say about the levels of polluting substances near roads and away from roads on the basis of your findings above?​

Answer 1

Answer:

yes l saw lichen in many places and observe it