A wildfire, also known as a forest fire, is an uncontrolled fire in wildland, often caused by lightning, human carelessness or arson.
Today, it is accepted that wildfires are a natural part of the ecosystem of wildlands, where, at the least, plants have evolved to survive fires, or even encourage them as a way to eliminate competition from less fire-tolerant species.
Photo credit: John McColgan, US Forest Service
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