Lichens are indicators of pollution because ________
A. They grow in oxygen depleted regions
B. They don’t grow in polluted regions
C. They grow in polluted regions
D. Their growth indicates that the region has very high carbon levels
Answer:B
Lichens are indicators of pollution because ________
A. They grow in oxygen depleted regions B. They don’t grow in polluted regions C. They grow in polluted regions D. Their growth indicates that the region has very high carbon levels