The presence of lichen in an area indicates the
Correct answer: A. Absence of air pollution
- A. Absence of air pollution
- B. Nutrient content of the area
- C. Rich biodiversity of the area
- D. Beginning of ecosystem degradation
Explanation
Lichens are bioindicators that can provide information about the environmental conditions of an area. They are bioindicators of air pollution. So option A is correct. Therefore, the correct answer is that the presence of lichen indicates the absence of air pollution in the area. The other options are incorrect, as lichen presence does not indicate the nutrient level of the area, the overall biodiversity of the area, or the beginning of ecosystem degradation. Options B, C, and D are incorrect.
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About Pollution and Conservation
Pollution covers the sources and effects of air, water, soil, noise and thermal pollutants, including toxicity, biomagnification, eutrophication and global environmental change. Conservation focuses on protecting biodiversity through habitat preservation, sustainable resource use, protected areas, wildlife laws, and in situ and ex situ methods.
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