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Not all hardwood trees have hard wood and softwoods soft wood, because these terms denote their taxonomic ancestry, not the wood's actual hardness.

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To learn more about this topic, start your googling with these keywords:
Angiosperm: a plant that has flowers and produces seeds enclosed within a carpel.
Gymnosperm: a plant that has seeds unprotected by an ovary or fruit.

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REFERENCES
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Ansell, M. P. "Wood microstructure–A cellular composite." Wood Composites. Woodhead Publishing, 2015. 3-26. https://doi.org/10.1016/B978-1-78242-454-3.00001-9

Bjurhager, Ingela. Effects of Cell Wall Structure on Tensile Properties of Hardwood: Effect of down-regulation of lignin on mechanical performance of transgenic hybrid aspen. Diss. KTH Royal Institute of Technology, 2011. https://www.diva-portal.org/smash/get/diva2:409533/FULLTEXT02.pdf

Botes, Christo, Steven D. Johnson, and Richard M. Cowling. "The birds and the bees: using selective exclusion to identify effective pollinators of African tree aloes." International Journal of Plant Sciences 170.2 (2009): 151-156.

Butterfield B.G. (1993) The structure of wood: an overview. In: Primary Wood Processing. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8110-3_1

Chilson-Parks, Laura. "Wood in the Middle Ages." Perspectives (2015). https://risdmuseum.org/art-design/projects-publications/articles/wood-middle-ages

Cywa, K. Trees and shrubs used in medieval Poland for making everyday objects. Veget Hist Archaeobot 27, 111–136 (2018). https://doi.org/10.1007/s00334-017-0644-9

Laboratory, Forest Products. Wood Handbook: Wood As an Engineering Material. United States, CreateSpace Independent Publishing Platform, 2013.

Meier, Eric. “Hardwood Anatomy.” The Wood Database, https://www.wood-database.com/wood-articles/hardwood-anatomy/.

Minea, Vasile. Industrial Heat Pump-Assisted Wood Drying. United States, CRC Press, 2018.

Plomion, Christophe, Grégoire Leprovost, and Alexia Stokes. "Wood formation in trees." Plant physiology 127.4 (2001): 1513-1523.

Ramage, Michael H., et al. "The wood from the trees: The use of timber in construction." Renewable and Sustainable Energy Reviews 68 (2017): 333-359.

Simm, Jonathan, and Crossman, Matt. Manual on the Use of Timber in Coastal and River Engineering. United Kingdom, Thomas Telford, 2004.

Wei-Dan Ding , Ahmed Koubaa , et al. (2008)
Relationship between wood porosity, wood density and methyl methacrylate impregnation rate, Wood Material Science &
Engineering, 3:1-2, 62-70, http://dx.doi.org/10.1080/17480270802607947

Wiedenhoeft, Alex. "Structure and function of wood." Wood handbook: wood as an engineering material: chapter 3. Centennial ed. General technical report FPL; GTR-190. Madison, WI: US Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2010: p. 3.1-3.18. 190 (2010): 3-1. https://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr190/chapter_03.pdf

WOOD Magazine Staff. “What Is the World's Hardest Wood?” WOOD Magazine, WOOD Magazine, 17 Jan. 2019, https://www.woodmagazine.com/wood-supplies/wood-species/what-is-the-worlds-hardest-wood.

Direct download: Why_Hardwoods_Are_The_Softest_Woods.mp4
Category:general -- posted at: 12:29pm EDT

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