Question 3: As the modern world evolved, several other patented materials, such as bones, starch, fish, and ________, were introduced as alternative materials for glue manufacture.
Question 4: Another example is when someone tries to pull apart ________ cookies and all the filling remains on one side; this is an adhesive failure, rather than a cohesive failure.
Question 7: Natural adhesives are made from inorganic mineral sources, or biological sources such as vegetable matter, ________ (dextrin), natural resins or from animals e.g.
Question 9: The ________ also used adhesives to make their short bows, and the Native Americans of the eastern United States used a mixture of spruce gum and fat as adhesives to fashion waterproof seams in their birchbarkcanoes.