Multiple Choice
Lichens take up nutrients and pollutants from airborne dust, so many cannot survive where the level of air pollution is high. The U.S. Forest Service monitors lichens on tree trunks as part of its program to assess the health of forest communities. In this regard, lichens serve as a(n) ____.
A) pioneer species
B) indicator species
C) endemic species
D) keystone species
E) exotic species
Correct Answer:
Verified
Correct Answer:
Verified
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Q13: The interaction in which one species benefits
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Q22: Four of the five answers listed below
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