Lichens are widely used as environmental indicators or bio-indicators. If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found. Therefore the answer is the air quality is good because of no lichens present
The statement 'Islands are often isolated, minimizing gene flow and maximizing diversification' explains why islands may have unique species on Earth.
<h3>What is isolation?</h3>
Isolation refers to the absence of gene flow between individuals of the same species for extended periods of time.
Isolation due to geographic barriers (e.g., a island) may led to reproductive differentiation and even to speciation.
In conclusion, the statement 'Islands are often isolated, minimizing gene flow and maximizing diversification' explains why islands may have unique species on Earth.
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Answer:
All of those listed are correct. I am unsure if you are asking to see if you are correct or not ,but I would say YES!!
Answer:
Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.
Explanation: