An elongated tailbone occurs rarely in some newborn children, what does the presence of a tailbone indicate? . a)that the tail will grow in length as the child grows. b)that our early ancestors were tailed primates. c)that the child's genome must have undergone mutation.

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.