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  2. Bow and arrow - Wikipedia

    en.wikipedia.org/wiki/Bow_and_arrow

    Drawing a bow, from a 1908 archery manual. A bow consists of a semi-rigid but elastic arc with a high-tensile bowstring joining the ends of the two limbs of the bow.An arrow is a projectile with a pointed tip and a long shaft with stabilizer fins towards the back, with a narrow notch at the very end to contact the bowstring.

  3. Picea mariana - Wikipedia

    en.wikipedia.org/wiki/Picea_mariana

    Picea mariana, the black spruce, is a North American species of spruce tree in the pine family. It is widespread across Canada, found in all 10 provinces and all 3 territories . It is the official tree of Newfoundland and Labrador and is that province's most abundant tree.

  4. Tree structure - Wikipedia

    en.wikipedia.org/wiki/Tree_structure

    A tree structure, tree diagram, or tree model is a way of representing the hierarchical nature of a structure in a graphical form. It is named a "tree structure" because the classic representation resembles a tree , although the chart is generally upside down compared to a biological tree, with the "stem" at the top and the "leaves" at the bottom.

  5. Spruce Up Your Christmas Tree With One of These Creative ...

    www.aol.com/lifestyle/spruce-christmas-tree-one...

    Spruce things up this year and choose from a plethora of Christmas tree themes that go with any holiday decor! Find rustic Christmas trees and many more.

  6. Treehouse Masters - Wikipedia

    en.wikipedia.org/wiki/Treehouse_Masters

    Treehouse Masters is an American reality television series that aired on Animal Planet and starred Pete Nelson, a master treehouse builder and owner of Nelson Treehouse and Supply. [1]

  7. Whippletree (mechanism) - Wikipedia

    en.wikipedia.org/wiki/Whippletree_(mechanism)

    A whippletree, or whiffletree, [1] [2] is a mechanism to distribute force evenly through linkages. It is also referred to as an equalizer, leader bar, or double tree. It consists of a bar pivoted at or near the centre, with force applied from one direction to the pivot and from the other direction to the tips. Several whippletrees may be used ...

  8. Spruce-pine-fir - Wikipedia

    en.wikipedia.org/wiki/Spruce-pine-fir

    Black spruce stand at Arctic Chalet, Inuvik, NT Spruce-pine-fir (SPF) is a classification of lumber that can be traded on commodities exchanges.. In Canada, and parts of the United States, most of the spruce tree species, pine tree species, and fir tree species share similar physical and mechanical characteristics, to the point where lumber derived from any of these species are interchangeable ...

  9. Permaculture - Wikipedia

    en.wikipedia.org/wiki/Permaculture

    Permaculture is an approach to land management and settlement design that adopts arrangements observed in flourishing natural ecosystems. It includes a set of design principles derived using whole-systems thinking. It applies these principles in fields such as regenerative agriculture, town planning, rewilding, and community resilience.