Firewood

Firewood is any wooden material that can be used for fuel. The term usually refers to wood fuel that is not industrially processed, such as wood pellets, and instead takes the form of a recognizable log or branch. Firewood can be heat-treated and seasoned (dry) or unseasoned (fresh/wet).

Two classes of firewood exist, which are either hardwood or softwood, depending on the species of tree that was cut.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0 de

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