With this picture showing wood in different forms, and attaching some basic information on the important material , i closed my 5daywoodchallenge participation. Wood is probably one of the oldest plants used. As a versatile, but especially renewable raw material wood remains one of the most important plant products as raw material for further processing and also as renewable energy source. People have used wood for millennia for many purposes, primarily as a fuel or as a construction material for making houses, tools, weapons, furniture, packaging, artworks, and paper. The year-to-year variation in tree-ring widths and isotopic abundances gives clues to the prevailing climate at that time. Wood, by far the dominant forest product, is used for many purposes: A 2011 discovery in the Canadian province of New Brunswick uncovered the earliest known plants to have grown wood, approximately 395 to 400 million years ago. Wood can be dated by carbon dating and in some species by dendrochronol
