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www.reference.com/article/two-organisms-make-up-lichens-c721c638d6d1c777

Lichens are symbiotic creatures that are comprised of both fungi and algae. Typically, a lichen is comprised of a fungal filament with green algae living inside of the filament. Cyanobacteria may also reside inside of the fungal filament to complete the lichen.

www.reference.com/article/lichens-grow-5881b488ae0264e3

Lichens grow on all continents and have the ability to survive all altitudes and climates. In general, all lichens require time, undistributed surfaces and clean air to survive and thrive.

www.reference.com/article/diseases-can-lichens-give-9092d296d5491b1a

While the lichen plant can't cause any diseases, "lichen" is also a term that describes skin diseases such as lichen sclerosus and lichen planus, as Mayo Clinic explains. However, doctors do not know the cause of lichen diseases, but some suspect it relates to the immune system.

www.reference.com/article/make-tree-trunk-faces-662242f29709529b

To create a tree trunk face, draw an approximate sketch on the wood, marking details such as eyes, mouth and nose, cut it into a rough shape with a chainsaw, then continue to make more detailed sketches and finer cuts. Finish the carving with manual or more delicate power tools, then sandpaper away

www.reference.com/article/symptoms-diseases-related-lichens-a46538456a06afe2

Symptoms of diseases related to lichens include itching, skin blotches, blisters, bleeding and ulcers, states Mayo Clinic. Lichen-related diseases generally manifest in skin conditions and rashes.

www.reference.com/article/people-paint-tree-trunks-white-d79bbfe18a8d09fb

Paint is applied to the base of the tree trunks to protect them from splitting in the winter and to protect them from herbicides. White paint is preferred as the color reflects sunlight the most.

www.reference.com/article/seal-damaged-tree-trunk-9160d5cc0a7d5092

Damaged trees seal themselves. It is not recommended to paint the wound. To help the tree repair damage and prevent infestations, you will need a saw and insecticide. The time required varies based on the severity of the damage.

www.reference.com/article/kingdoms-lichen-belong-a50615b0da717fc8

Lichens may belong to one, two, or all three of the following kingdoms: Fungi, Protista and Monera. Lichens are groups of multiple organisms, which may occur in the forms of fungi, protists and monerans. Although they share the classification of lichens, species vary widely in habitat, appearance an

www.reference.com/world-view/tips-repairing-tree-trunk-damage-debb33eb7b15e6c2

Some tips for repairing tree trunk damage include cleaning the damaged area, reattaching bark and trimming jagged edges of the wound. A tree owner can usually repair tree trunk damage if it covers less than 50 percent of the tree's circumference but should call a tree professional if the damage is m

www.reference.com/article/causes-lichen-planopilaris-2f389fbe2fe1be0a

The cause of lichen planopilaris is unknown, states Mayo Clinic. It may be triggered by hepatitis C infections, the hepatitis B vaccine, the flu vaccine, exposure to certain pigments and chemicals, NSAIDs, and certain heart disease or blood pressure medications. It is commonly known as lichen planus