Those splotches on rocks, tree trunks and twigs? Lichens! Lichens are actually a symbiosis between two major divisions of life, neither of which is a plant. And you can find them everywhere, as long as the air is not polluted.
Nature Moments are produced by Nat Wheelwright and Wilder Nicholson, with help from Genie Wheelwright, Paul Benham, Tom Porter, and Rebecca Goldfine.
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