Why are lichens a good indicator of the environment's health?
Lichens, along with other sensitive species such as salmon, are good indicators of environmental health as they are sensitive to their environments.
These species' lives are influenced by the environment, acidity, humidity, and ecosystem; even minor changes to these elements can have a significant effect on the population. For further information, see the Wikipedia article at https://tutor.hix.ai
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Lichens are a good indicator of the environment's health because they are sensitive to changes in air quality, pollution levels, and habitat conditions. They can accumulate pollutants from the atmosphere and soil, making them useful for monitoring environmental pollution. Additionally, lichens have specific habitat requirements and are sensitive to environmental stressors, making their presence or absence indicative of ecosystem health and quality.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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