| 1. | Each lichen actually is a combination of two types of organisms.
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| 2. | Swags of lichen hanging from the ceiling add a gothic touch.
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| 3. | A number of microscopic algae also occur as symbionts in lichens.
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| 4. | These animals ate the lichens, moss and grasses that grew.
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| 5. | Color changes depending on when a lichen is wet or dry.
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| 6. | In northern coastal areas, stony and shrub lichens are common.
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| 7. | In Sweden, lichen grows at approximately 2 mm per year.
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| 8. | Liquid applied membranes are also naturally resistant to moss and lichen.
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| 9. | One example of a type of vegetation is a crustose lichen.
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| 10. | When these lichens die their thalli are decomposed to add humus.
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