Fill in the Blanks Wood 22 Derivatives FBOnline version Technology in secondary school for spanish speakers by tekno TEKNESO 1 parasites leftover plywood chips chipboard easy prefabricated fibreboard cellulose ecological glued sheets Wood derivatives are woods that come from wood , fibers or compressed and together . Over all , the most important properties are ? * they are very and cheap because of they are made from the of wood cuttings , * they are not attacked by because of the glue , * they are to work with . They can be classified into , , and material s