The picture above is a picture of Commensalism. I took this picture outside of my house. This is Commensalism because when lichen grows on the trees, like shown above, the tree is not harmed in anyway but the lichen benefits from growing on the tree. The lichen benefits from growing on trees because lichens growing on trees get both water and minerals from the air through cell-to-cell absorption. So when it rains, the lichen absorbs the water and through that the minerals that were on the lichen is also absorbed. While in some other cases lichen helps the environment by being a source of food to other animals and helping build homes for birds.
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